Try Linux

Non-DIY

Debian

https://www.debian.org/distrib/

Ubuntu

https://ubuntu.com/download/desktop

Old Releases

http://releases.ubuntu.com/releases/
http://old-releases.ubuntu.com/releases/

Kubuntu

https://kubuntu.org/getkubuntu/

Lubuntu

https://lubuntu.me/downloads/

Xubuntu

https://xubuntu.org/download/

Ubuntu Budgie

https://ubuntubudgie.org/downloads/

Ubuntu MATE

https://ubuntu-mate.org/download/

Linux Mint

https://linuxmint.com/download.php

elementary os

https://elementary.io/ has an optional donate option, just choose

then insert 0

Pop!_OS

https://pop.system76.com/

Fedora

Workstation

https://getfedora.org/en/workstation/download/

Rawhide

https://fedoraproject.org/wiki/Releases/Rawhide#Using_Rawhide

IoT (Internet of Things)

https://getfedora.org/en/iot/download/

Server

https://getfedora.org/en/server/download/

Silverblue

https://silverblue.fedoraproject.org/download

Red Hat Linux

Newer (Fedora Based, Paid)

https://www.redhat.com/technologies/linux-platforms/enterprise-linux

Older (Independent, Free)

ftp://archive.download.redhat.com/pub/redhat/linux/

Manjaro (Arch-based)

https://manjaro.org/download/

Community Releases

https://manjaro.org/download/#Community

Old Releases

https://osdn.net/projects/manjaro-archive/

openSUSE

Tumbleweed

https://get.opensuse.org/tumbleweed/

Leap

https://get.opensuse.org/leap/

SUSE (Paid)

Enterprise Desktop

https://www.suse.com/download/sled

Enterprise Server

https://www.suse.com/download/sles

Redcore (Gentoo-based)

https://redcorelinux.org/download

DIY

Arch Linux (has commandline installer)

https://archlinux.org/download/

Artix Linux (Arch-based, has versions with installer)

https://artixlinux.org/download.php

Gentoo

https://www.gentoo.org/downloads/

Slackware (has TUI installer)

http://www.slackware.com/getslack/

Slackware Current

https://slackware.uk/people/alien-current-iso/slackware-current-iso/

x86_64

https://slackware.uk/people/alien-current-iso/slackware64-current-iso/