Why do you need macOS guest support? IIRC none of the official reasons (like the forced developing/releasing of App Store apps only from macOS) would work in a non-supported virtualised environment due to Apple shenanigans with the hardware and software checks thereof.
Huh? When I still virtualized macOS everything worked just fine. I think the last one was 11 or 12. ESXi has now dropped support and Mac has not much relevance for me anymore.
I heard the apple silicon platform is a bit tighter but that can't really be virtualized on x86.
