I’d recommend opensuse tumbleweed. I would suggest Debian but it moves too slow (updates) for gaming. I think arch is good but you will have to want to learn a bit more about it. Tumbleweed falls closer to Debian with stability and still near arch as far as frequent updates.

Any keyboard is going to work. As Ipacial said not all rgb stuff will work but basically any major brand works with open rgb at this point. I personally have a razor keyboard that I can control the lights with open rgb. I have a Logitech mouse that does not have rgb and I control the dpi with solaar.

I mean I don’t think it’s the same as red hat at all because they are not making it closed source.

I think there will be even more support for anti cheat games and there is no way NVK even on its supported cards will have performance parity with the proprietary driver.

If you care about rgb just look at supported devices and brands here https://openrgb.org/devices.html This is an extremely long list so just find a keyboard you like and see if it is on the list.

At this point graphics driver optimizations have made the steam shader caching feature obsolete. I would recommend disabling it in the steam settings.

There is also Xero Linux

Did you update your system other than your nvidia driver? Like from fedora 37 to 38

I’d recommend installing the flatpak. Tf2 stopped working for me when I upgraded to fedora 38. The flatpak seems to fix whatever dependency issue is causing it. It also fixes portal 2 and Gmod cause those also stopped launching on f38.

True there is no beating the arch wiki

Don’t know if it’s the answer you are looking for but if when you install the game you click add application menu shortcut it will add it to the menu that opens with windows key. I have never personally used desktop shortcuts on gnome since it isn’t included stock.