Those are not individual random 3rd party distros.

Please read up on that stuff first. I understand how oldschool users find this odd.

• Fedora is the base distro. Legally restricted, not being able to preinstall crucial components. They also do a bunch of annoying opinionated decisions, like Fedora Flatpaks or Toolbx instead of Distrobox.
• Fedora Kinoite: the immutable image of Fedora + KDE Plasma. Very barebones, not really user friendly out of the box, but a great distro. As an advanced user I use it daily.
• uBlue Bazzite and Aurora: take Fedora Atomic desktops, make them compatible with NVIDIA, ASUS, Surface and more. Add a ton of packages, many call that bloat, but it makes stuff work out of the box.

(Btw. great Distro names :D)