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.
Those are not individual random 3rd party distros.
Please read up on that stuff first. I understand how oldschool users find this odd.