Yeah, https://chimeraos.org/ or https://rhinolinux.org/ or https://garudalinux.org/
But any linux with modern hardware really. I play games on my desktop (and get work done too) with EndeavourOS (which is an easy to install and maintain version of Arch Linux, which is also the base of SteamOS. With Arch Linux you have bleeding edge updates, like new Linux kernel versions. SteamOS slows that down, only letting in those bleading edge updates after they’ve vetteed it on the SteamDeck hardware).
Steam takes care of proton support. You can try to support other store fronts with applications like Lutris, that try to apply that compatibility layer to those games.
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