Looks like Proton does a better job than snap or rpm. I don't get why there is no Linux layer dedicated to translating x32 library calls into x64 calls. The other way around is often impossible I know.
Proton is a packaged Wine (Windows emulator) with DXVK (like DirectX for Linux).
Snap packages are based on core images, so if there was interest, they could create a core image that has Wine and DXVK. Then any game would result Wine and DXVK.
RPM is comparable to Deb packages. There is no significant separation of one package from another apart from file permissions.