I'm not too familiar with Macs, but as far as OS version goes, Catalina (or in the future anything after that) requires a recent version of Crossover 19 or later, so my guess is anything M1-related will as well, RP still being 32-bit and all.
I haven't heard of anyone using it on M1 in particular yet. Maybe someone else here will know (otherwise there are lots of users on the Roguelikes/RoguelikeDev Discord--one of them might have by now?).