diff --git a/src/schema.ts b/src/schema.ts
index 0f541608cd..7b1b1c6fcb 100644
--- a/src/schema.ts
+++ b/src/schema.ts
@@ -152,7 +152,7 @@ const processSchema = (schemas: Map<string, Schema>, schema: Schema): void => {
 
       // Add to parent's children
       parent.children =
-        parent.children === undefined ? [title] : [...parent.children, title]
+        parent.children === undefined ? [title] : [...parent.children, title].sort()
 
       // Add to all ancestors' descendants and type enum
       let ancestor: Schema | null = parent
@@ -160,16 +160,14 @@ const processSchema = (schemas: Map<string, Schema>, schema: Schema): void => {
         ancestor.descendants =
           ancestor.descendants === undefined
             ? [title]
-            : [...ancestor.descendants, title]
+            : [...ancestor.descendants, title].sort()
         if (
+          ancestor.title !== undefined &&
           ancestor.properties !== undefined &&
           ancestor.properties.type !== undefined &&
           ancestor.properties.type.enum !== undefined
         ) {
-          ancestor.properties.type.enum = [
-            ...ancestor.properties.type.enum,
-            title
-          ]
+          ancestor.properties.type.enum = [ancestor.title, ...ancestor.descendants]
         }
         ancestor = parentSchema(schemas, ancestor)
       }
diff --git a/tests/__file_snapshots__/Thing.ts b/tests/__file_snapshots__/Thing.ts
index ce9f407267..e1b2f17202 100644
--- a/tests/__file_snapshots__/Thing.ts
+++ b/tests/__file_snapshots__/Thing.ts
@@ -1,12 +1,10 @@
 /**
  * The most generic type of item https://schema.org/Thing.
  */
-export interface Thing  {
-  type: 'Thing' | 'CreativeWork' | 'Article' | 'MediaObject' | 'AudioObject' | 'Brand' | 'Code' | 'CodeBlock' | 'SoftwareSourceCode' | 'CodeChunk' | 'CodeExpr' | 'Collection' | 'ContactPoint' | 'Datatable' | 'DatatableColumn' | 'DatatableColumnSchema' | 'Mark' | 'Delete' | 'Emphasis' | 'Environment' | 'Heading' | 'ImageObject' | 'Include' | 'Link' | 'List' | 'ListItem' | 'Mount' | 'Organization' | 'Paragraph' | 'Person' | 'Product' | 'Quote' | 'QuoteBlock' | 'ResourceParameters' | 'SoftwareApplication' | 'SoftwareSession' | 'Strong' | 'Subscript' | 'Superscript' | 'Table' | 'TableCell' | 'TableRow' | 'ThematicBreak' | 'VideoObject'
+export interface Thing extends Entity {
+  type: 'Thing' | 'Article' | 'AudioObject' | 'Brand' | 'Code' | 'CodeBlock' | 'CodeChunk' | 'CodeExpr' | 'Collection' | 'ContactPoint' | 'CreativeWork' | 'Datatable' | 'Environment' | 'ImageObject' | 'MediaObject' | 'Mount' | 'Organization' | 'Person' | 'Product' | 'ResourceParameters' | 'SoftwareApplication' | 'SoftwareSession' | 'SoftwareSourceCode' | 'Table' | 'VideoObject'
   alternateNames?: Array<string>
   description?: string
-  id?: string
-  meta?: {[key: string]: any}
   name?: string
   url?: string
 }