There's always Bazzite's vanilla KDE cousin, Aurora: https://getaurora.dev/ It is essentially the Fedora KDE spin with way better hardware support and QoL features.

But Bazzite isn't really a distro in it's own right anyway, it's an unofficial Fedora spin that gets updates pretty much immediately (<24hrs) from upstream. It kind of "solves" a lot of the issues with most gaming distros.

I'd highly recommend both to new users as well, as they are immutable (like the Fedora Atomic Desktops) and make it a lot harder to completely mess up your install while you're still learning.