Dropping by to throw some more praise onto the pile for Nobara Linux - it’s my current distro and I have an AMD RX 6700 as well. All the games in my Steam library work great, including Baldur’s Gate 3 (no tweaks necessary other than enabling the latest GE-Proton version). Unfortunately I haven’t played any of the games you listed; my preferences lean mostly towards RPGs like Elden Ring, Path of Exile, Guild Wars 2, Valheim (with mods!), Enderal and so on.
I use the Steam version with the
-provider Portal
launch modifier (lets me use my old ANet account)