diff --git a/packages/core/src/List/List.tsx b/packages/core/src/List/List.tsx
index dedd900d857..0fe516ab6c3 100644
--- a/packages/core/src/List/List.tsx
+++ b/packages/core/src/List/List.tsx
@@ -152,7 +152,6 @@ export function List({
   style,
   'data-testid': testId,
   ref,
-  ...rest
 }: ListProps) {
   const headerId = useId();
   const isOrdered = listStyle === 'decimal';
@@ -167,7 +166,14 @@ export function List({
     <Tag
       ref={ref as React.Ref<HTMLUListElement & HTMLOListElement>}
       data-testid={testId}
+      aria-labelledby={header != null ? headerId : undefined}
       {...(isOrdered && start != null && start !== 1 ? {start} : {})}
+      // The base list style always sets list-style-type: none (markers are
+      // custom-rendered by ListItem), and Safari/VoiceOver drops implicit
+      // list semantics for lists styled with list-style: none. The explicit
+      // role restores "list, N items" announcements for every listStyle
+      // variant.
+      role="list"
       {...mergeProps(
         themeProps('list', {density, listStyle}),
         stylex.props(
@@ -181,17 +187,7 @@ export function List({
         ),
         className,
         style,
-      )}
-      {...rest}
-      // The base list style always sets list-style-type: none (markers are
-      // custom-rendered by ListItem), and Safari/VoiceOver drops implicit
-      // list semantics for lists styled with list-style: none. The explicit
-      // role restores "list, N items" announcements for every listStyle
-      // variant.
-      role="list"
-      // Only emitted when there is a header to point at, so a headerless list
-      // can still be named by a caller's aria-labelledby.
-      {...(header != null ? {'aria-labelledby': headerId} : {})}>
+      )}>
       {children}
     </Tag>
   );
diff --git a/packages/core/src/Markdown/Markdown.tsx b/packages/core/src/Markdown/Markdown.tsx
index 330a5283874..813e44eb1a9 100644
--- a/packages/core/src/Markdown/Markdown.tsx
+++ b/packages/core/src/Markdown/Markdown.tsx
@@ -1627,7 +1627,6 @@ export function Markdown({
   className,
   style,
   'data-testid': testId,
-  ...rest
 }: MarkdownProps): React.ReactElement {
   const t = useTranslator();
   const LinkComponent = useLinkComponent();
@@ -1756,8 +1755,7 @@ export function Markdown({
           stylex.props(styles.root, styles.inlineRoot, xstyle),
           className,
           style,
-        )}
-        {...rest}>
+        )}>
         {inlineNodes.map((node, i) =>
           renderInline(
             node,
@@ -1782,6 +1780,7 @@ export function Markdown({

   const rendered = (
     <div
+      role="document"
       ref={ref as React.Ref<HTMLDivElement>}
       data-testid={testId}
       {...mergeProps(
@@ -1789,9 +1788,7 @@ export function Markdown({
         stylex.props(styles.root, xstyle),
         className,
         style,
-      )}
-      {...rest}
-      role="document">
+      )}>
       {blocks.map((block, i) =>
         renderBlock(
           block,
diff --git a/packages/core/src/MetadataList/MetadataListItem.tsx b/packages/core/src/MetadataList/MetadataListItem.tsx
index 5dbb1a37372..6bfffa953e8 100644
--- a/packages/core/src/MetadataList/MetadataListItem.tsx
+++ b/packages/core/src/MetadataList/MetadataListItem.tsx
@@ -144,7 +144,6 @@ export function MetadataListItem({
   style,
   'data-testid': testId,
   ref,
-  ...rest
 }: MetadataListItemProps) {
   const ctx = use(MetadataListContext);
   const labelPosition = ctx?.labelConfig.position ?? 'start';
@@ -171,8 +170,7 @@ export function MetadataListItem({
           stylex.props(styles.stackedWrapper, xstyle),
           className,
           style,
-        )}
-        {...rest}>
+        )}>
         <dt {...stylex.props(styles.stackedLabel)}>{labelContent}</dt>
         <dd {...stylex.props(styles.stackedValue)}>{children}</dd>
       </div>
@@ -190,8 +188,7 @@ export function MetadataListItem({
           stylex.props(styles.label, xstyle),
           className,
           style,
-        )}
-        {...rest}>
+        )}>
         {labelContent}
       </dt>
       <dd
diff --git a/packages/core/src/NavMenu/NavHeadingMenu.tsx b/packages/core/src/NavMenu/NavHeadingMenu.tsx
index 4bd5751e83d..710d8dc798d 100644
--- a/packages/core/src/NavMenu/NavHeadingMenu.tsx
+++ b/packages/core/src/NavMenu/NavHeadingMenu.tsx
@@ -15,7 +15,7 @@
 import React, {useCallback, useMemo, type ReactNode} from 'react';
 import * as stylex from '@stylexjs/stylex';
 import {spacingVars} from '../theme/tokens.stylex';
-import {composeEventHandlers, mergeProps} from '../utils';
+import {mergeProps} from '../utils';
 import type {BaseProps} from '../BaseProps';
 import {useListFocus} from '../hooks/useListFocus';
 import {useTypeahead} from '../hooks/useTypeahead';
@@ -96,8 +96,6 @@ export function NavHeadingMenu({
   className,
   style: styleProp,
   'data-testid': testId,
-  onKeyDown: onKeyDownProp,
-  ...rest
 }: NavHeadingMenuProps) {
   const closeCtx = useNavHeadingCloseContext();
   const closeMenu = closeCtx?.closeMenu;
@@ -166,16 +164,15 @@ export function NavHeadingMenu({
     <NavHeadingMenuContext value={ctx}>
       <div
         ref={useMergedRefs(ref, listRef)}
+        role="menu"
+        onKeyDown={listKeyDown}
         data-testid={testId}
         {...mergeProps(
           themeProps('nav-heading-menu', {size}),
           stylex.props(styles.root, sizeStyles[size], xstyle),
           className,
           inlineStyle,
-        )}
-        {...rest}
-        role="menu"
-        onKeyDown={composeEventHandlers(onKeyDownProp, listKeyDown)}>
+        )}>
         {children}
       </div>
     </NavHeadingMenuContext>
diff --git a/packages/core/src/Timestamp/Timestamp.tsx b/packages/core/src/Timestamp/Timestamp.tsx
index 85e2c1df250..6518bd5849a 100644
--- a/packages/core/src/Timestamp/Timestamp.tsx
+++ b/packages/core/src/Timestamp/Timestamp.tsx
@@ -419,7 +419,6 @@ export function Timestamp({
   style,
   ref,
   'data-testid': testId,
-  ...rest
 }: TimestampProps) {
   const t = useTranslator();
   const locale = useLocale();
@@ -531,16 +530,15 @@ export function Timestamp({
       <time
         ref={mergedTimeRef}
         dateTime={isoString}
-        data-testid={testId}
-        {...stylex.props(styles.time)}
-        {...rest}
         // `ariaLabelText` is '' only for an invalid date, which bails out
         // before rendering — but keep the guard local: an empty aria-label
         // must be omitted entirely (not rendered as aria-label="") so AT
         // falls back to reading the visible <time> content.
-        {...(isRelativeFormat(effectiveFormat) && ariaLabelText !== ''
-          ? {'aria-label': ariaLabelText}
-          : {})}
+        aria-label={
+          isRelativeFormat(effectiveFormat) && ariaLabelText !== ''
+            ? ariaLabelText
+            : undefined
+        }
         // The hover card is anchored here with focusTrigger="always", which
         // attaches focus listeners but does not itself make the anchor
         // focusable. A bare <time> is not focusable, so without a tab stop
@@ -549,7 +547,9 @@ export function Timestamp({
         // gratuitous tab stops otherwise. The card carries its own
         // dashed-underline hover indication as the affordance, so the anchor
         // needs no separate focus outline.
-        {...(showTooltip ? {tabIndex: 0} : {})}>
+        tabIndex={showTooltip ? 0 : undefined}
+        data-testid={testId}
+        {...stylex.props(styles.time)}>
         {displayText}
       </time>
     </Text>
diff --git a/packages/core/src/Token/Token.tsx b/packages/core/src/Token/Token.tsx
index bdb3419d01d..23fef90e913 100644
--- a/packages/core/src/Token/Token.tsx
+++ b/packages/core/src/Token/Token.tsx
@@ -307,7 +307,6 @@ export function Token({
   style,
   'data-testid': testId,
   ref,
-  ...rest
 }: TokenProps) {
   const t = useTranslator();
   const LinkComponent = useLinkComponent();
@@ -345,8 +344,8 @@ export function Token({

   const sharedProps = {
     'data-testid': testId,
-    ...(isLabelHidden ? {'aria-label': label} : {}),
-    ...(description != null ? {'aria-description': description} : {}),
+    'aria-label': isLabelHidden ? label : undefined,
+    'aria-description': description,
   };

   if (role === 'link') {
@@ -355,6 +354,8 @@ export function Token({
         <LinkComponent
           ref={ref as React.Ref<HTMLAnchorElement>}
           href={href as string}
+          aria-disabled={isDisabled || undefined}
+          {...sharedProps}
           {...mergeProps(
             themeProps('token', {color, size}),
             focusOutlineProps.focusVisible(
@@ -367,10 +368,7 @@ export function Token({
             ),
             className,
             style,
-          )}
-          {...rest}
-          {...(isDisabled ? {'aria-disabled': true} : {})}
-          {...sharedProps}>
+          )}>
           {content}
         </LinkComponent>
       );
@@ -402,6 +400,7 @@ export function Token({
             {label}
           </span>
         }
+        {...sharedProps}
         {...mergeProps(
           themeProps('token', {color, size}),
           focusOutlineProps.focusWithin(
@@ -415,8 +414,6 @@ export function Token({
           className,
           style,
         )}
-        {...rest}
-        {...sharedProps}
       />
     );
   }
@@ -434,6 +431,7 @@ export function Token({
       <span
         ref={ref}
         onClick={isDisabled ? undefined : handleContainerClick}
+        {...sharedProps}
         {...mergeProps(
           themeProps('token', {color, size}),
           focusOutlineProps.focusWithin(
@@ -446,9 +444,7 @@ export function Token({
           ),
           className,
           style,
-        )}
-        {...rest}
-        {...sharedProps}>
+        )}>
         {icon}
         <button
           type="button"
@@ -472,6 +468,7 @@ export function Token({
   return (
     <span
       ref={ref}
+      {...sharedProps}
       {...mergeProps(
         themeProps('token', {color, size}),
         stylex.props(
@@ -483,9 +480,7 @@ export function Token({
         ),
         className,
         style,
-      )}
-      {...rest}
-      {...sharedProps}>
+      )}>
       {content}
     </span>
   );
diff --git a/packages/core/src/Token/TokenLink.tsx b/packages/core/src/Token/TokenLink.tsx
index 9a0b9d637e8..bc4a455822f 100644
--- a/packages/core/src/Token/TokenLink.tsx
+++ b/packages/core/src/Token/TokenLink.tsx
@@ -29,7 +29,6 @@ import type {ReactNode, CSSProperties, Ref, HTMLAttributes} from 'react';
 import {useRef} from 'react';
 import {useClickableContainer} from '../hooks/useClickableContainer';
 import type {LinkComponentType} from '../Link/types';
-import {composeEventHandlers} from '../utils';

 import {useMergedRefs} from '../hooks/useMergedRefs';
 export interface TokenLinkProps extends HTMLAttributes<HTMLElement> {
@@ -73,8 +72,6 @@ export function TokenLink({
   icon,
   endContent,
   removeButton,
-  onClick: onClickProp,
-  onMouseUp: onMouseUpProp,
   ...containerProps
 }: TokenLinkProps) {
   const containerRef = useRef<HTMLElement | null>(null);
@@ -90,15 +87,9 @@ export function TokenLink({
   return (
     <span
       ref={useMergedRefs(ref, containerRef)}
-      {...containerProps}
-      onClick={
-        isDisabled ? onClickProp : composeEventHandlers(onClickProp, onClick)
-      }
-      onMouseUp={
-        isDisabled
-          ? onMouseUpProp
-          : composeEventHandlers(onMouseUpProp, onMouseUp)
-      }>
+      onClick={isDisabled ? undefined : onClick}
+      onMouseUp={isDisabled ? undefined : onMouseUp}
+      {...containerProps}>
       {icon}
       <LinkComponent
         ref={linkRef as Ref<HTMLAnchorElement>}
diff --git a/packages/core/src/TopNav/TopNavMegaMenu.tsx b/packages/core/src/TopNav/TopNavMegaMenu.tsx
index 8bb6dfbcbd8..7125c8bcb7e 100644
--- a/packages/core/src/TopNav/TopNavMegaMenu.tsx
+++ b/packages/core/src/TopNav/TopNavMegaMenu.tsx
@@ -53,7 +53,7 @@ import {usePopover} from '../Popover/usePopover';
 import {useMenuHover} from '../hooks/useMenuHover';
 import {Grid} from '../Grid/Grid';
 import {Icon} from '../Icon';
-import {mergeProps, composeEventHandlers} from '../utils';
+import {mergeProps} from '../utils';
 import type {BaseProps} from '../BaseProps';
 import {navItemStyles} from '../NavItem/navItemStyles.stylex';
 import {useTopNavSlot} from './TopNavContext';
@@ -336,7 +336,6 @@ export function TopNavMegaMenu({
   delay = 150,
   hideDelay = 250,
   onOpenChange,
-  ...rest
 }: TopNavMegaMenuProps) {
   const renderMode = useTopNavRenderMode();

@@ -351,14 +350,7 @@ export function TopNavMegaMenu({
   // Drawer mode — inline collapsible
   // =========================================================================
   if (renderMode === 'drawer') {
-    return (
-      <DrawerMegaMenu
-        label={label}
-        items={items}
-        featured={featured}
-        {...rest}
-      />
-    );
+    return <DrawerMegaMenu label={label} items={items} featured={featured} />;
   }

   // =========================================================================
@@ -373,7 +365,6 @@ export function TopNavMegaMenu({
       delay={delay}
       hideDelay={hideDelay}
       onOpenChange={onOpenChange}
-      {...rest}
     />
   );
 }
@@ -396,13 +387,6 @@ function DefaultMegaMenu({
   delay = 150,
   hideDelay = 250,
   onOpenChange,
-  xstyle,
-  className,
-  style,
-  onClick: onClickProp,
-  onMouseEnter: onMouseEnterProp,
-  onMouseLeave: onMouseLeaveProp,
-  ...rest
 }: TopNavMegaMenuProps) {
   const slot = useTopNavSlot();
   const triggerButtonRef = useRef<HTMLButtonElement | null>(null);
@@ -470,27 +454,14 @@ function DefaultMegaMenu({
       <button
         ref={useMergedRefs(triggerButtonRef, setTriggerEl, ref)}
         type="button"
-        {...rest}
         {...popover.triggerProps}
         {...hoverTriggerProps}
-        onClick={composeEventHandlers(onClickProp, hoverTriggerProps.onClick)}
-        onMouseEnter={composeEventHandlers(
-          onMouseEnterProp,
-          hoverTriggerProps.onMouseEnter,
-        )}
-        onMouseLeave={composeEventHandlers(
-          onMouseLeaveProp,
-          hoverTriggerProps.onMouseLeave,
-        )}
         {...mergeProps(
           themeProps('top-nav-mega-menu'),
           focusOutlineProps.focusVisible(
             styles.trigger,
             popover.isOpen && styles.triggerOpen,
-            xstyle,
           ),
-          className,
-          style,
         )}>
         {label}
         <Icon
@@ -542,13 +513,7 @@ function DrawerMegaMenu({
   label,
   items,
   featured,
-  xstyle,
-  className,
-  style,
-  onClick: onClickProp,
-  ...rest
-}: Pick<TopNavMegaMenuProps, 'label' | 'items' | 'featured'> &
-  BaseProps<HTMLButtonElement>) {
+}: Pick<TopNavMegaMenuProps, 'label' | 'items' | 'featured'>) {
   const [isExpanded, setIsExpanded] = useState(false);
   const menuId = `mega-menu-${label.toLowerCase().replace(/\s+/g, '-')}`;

@@ -557,10 +522,7 @@ function DrawerMegaMenu({
       {/* Header toggle — same pattern as TopNavMenu drawer */}
       <button
         type="button"
-        {...rest}
-        onClick={composeEventHandlers(onClickProp, () =>
-          setIsExpanded(v => !v),
-        )}
+        onClick={() => setIsExpanded(v => !v)}
         aria-expanded={isExpanded}
         aria-controls={`${menuId}-items`}
         {...mergeProps(
@@ -568,10 +530,7 @@ function DrawerMegaMenu({
           focusOutlineProps.focusVisible(
             navItemStyles.item,
             styles.drawerHeader,
-            xstyle,
           ),
-          className,
-          style,
         )}>
         {label}
         <Icon
diff --git a/packages/core/src/TopNav/TopNavMenu.tsx b/packages/core/src/TopNav/TopNavMenu.tsx
index ff393631b86..8e4b64cf906 100644
--- a/packages/core/src/TopNav/TopNavMenu.tsx
+++ b/packages/core/src/TopNav/TopNavMenu.tsx
@@ -29,7 +29,7 @@ import {useMenuHover} from '../hooks/useMenuHover';
 import {useListFocus} from '../hooks/useListFocus';
 import {useTypeahead} from '../hooks/useTypeahead';
 import {Icon} from '../Icon';
-import {mergeProps, composeEventHandlers} from '../utils';
+import {mergeProps} from '../utils';
 import {useMergedRefs} from '../hooks/useMergedRefs';
 import type {BaseProps} from '../BaseProps';
 import {navItemStyles} from '../NavItem/navItemStyles.stylex';
@@ -332,13 +332,6 @@ export function TopNavMenu({
   items,
   delay = 150,
   hideDelay = 200,
-  xstyle,
-  className,
-  style,
-  onClick: onClickProp,
-  onMouseEnter: onMouseEnterProp,
-  onMouseLeave: onMouseLeaveProp,
-  ...rest
 }: TopNavMenuProps) {
   const renderMode = useTopNavRenderMode();
   const {closeMobileNav} = useAppShellMobile();
@@ -447,22 +440,12 @@ export function TopNavMenu({
       <div {...stylex.props(drawerStyles.section)}>
         <button
           type="button"
-          {...rest}
-          onMouseEnter={onMouseEnterProp}
-          onMouseLeave={onMouseLeaveProp}
-          onClick={composeEventHandlers(onClickProp, () =>
-            setDrawerExpanded(v => !v),
-          )}
+          onClick={() => setDrawerExpanded(v => !v)}
           aria-expanded={drawerExpanded}
           aria-controls={`${menuId}-items`}
-          {...mergeProps(
-            focusOutlineProps.focusVisible(
-              navItemStyles.item,
-              drawerStyles.header,
-              xstyle,
-            ),
-            className,
-            style,
+          {...focusOutlineProps.focusVisible(
+            navItemStyles.item,
+            drawerStyles.header,
           )}>
           {label}
           <Icon
@@ -521,27 +504,14 @@ export function TopNavMenu({
       <button
         ref={setTriggerRef}
         type="button"
-        {...rest}
         {...popover.triggerProps}
         {...triggerProps}
-        onClick={composeEventHandlers(onClickProp, triggerProps.onClick)}
-        onMouseEnter={composeEventHandlers(
-          onMouseEnterProp,
-          triggerProps.onMouseEnter,
-        )}
-        onMouseLeave={composeEventHandlers(
-          onMouseLeaveProp,
-          triggerProps.onMouseLeave,
-        )}
         {...mergeProps(
           themeProps('top-nav-menu'),
           focusOutlineProps.focusVisible(
             styles.trigger,
             popover.isOpen && styles.triggerOpen,
-            xstyle,
           ),
-          className,
-          style,
         )}>
         {label}
         <Icon
diff --git a/packages/core/src/TreeList/TreeList.tsx b/packages/core/src/TreeList/TreeList.tsx
index dc941f1c723..c79c18b5292 100644
--- a/packages/core/src/TreeList/TreeList.tsx
+++ b/packages/core/src/TreeList/TreeList.tsx
@@ -189,9 +189,6 @@ export function TreeList({
   style,
   'data-testid': testId,
   ref,
-  'aria-label': ariaLabel,
-  'aria-labelledby': ariaLabelledBy,
-  ...rest
 }: TreeListProps) {
   const headerId = useId();

@@ -339,8 +336,7 @@ export function TreeList({
         stylex.props(styles.root, xstyle),
         className,
         style,
-      )}
-      {...rest}>
+      )}>
       {header != null && (
         <div id={headerId} {...stylex.props(styles.header)}>
           {header}
@@ -349,11 +345,7 @@ export function TreeList({
       <ul
         ref={treeRef}
         role="tree"
-        // The tree's name belongs on the element that carries role="tree",
-        // not on the layout root the other pass-through props land on. The
-        // header wins when there is one to point at.
-        aria-label={ariaLabel}
-        aria-labelledby={header != null ? headerId : ariaLabelledBy}
+        aria-labelledby={header != null ? headerId : undefined}
         onKeyDown={handleKeyDown}
         onFocus={handleFocus}
         {...stylex.props(styles.list)}>
diff --git a/packages/core/src/Typeahead/TypeaheadItem.tsx b/packages/core/src/Typeahead/TypeaheadItem.tsx
index 5225970b1e7..85e68275485 100644
--- a/packages/core/src/Typeahead/TypeaheadItem.tsx
+++ b/packages/core/src/Typeahead/TypeaheadItem.tsx
@@ -132,11 +132,7 @@ export function TypeaheadItem<T extends SearchableItem>({
   icon,
   description,
   isDisabled = false,
-  group: _group,
   xstyle,
-  className,
-  style,
-  ...rest
 }: TypeaheadItemProps<T>) {
   // If item has a pre-rendered element, use it
   if (item.element) {
@@ -149,10 +145,7 @@ export function TypeaheadItem<T extends SearchableItem>({
       {...mergeProps(
         themeProps('typeahead-item'),
         stylex.props(styles.container, isDisabled && styles.disabled, xstyle),
-        className,
-        style,
-      )}
-      {...rest}>
+      )}>
       {icon}
       <div {...stylex.props(styles.content)}>
         <span {...stylex.props(styles.label)}>{item.label}</span>