I've just found this community and it seems to have no traffic. Your post is months old, but if you're still looking for an answer then these are the comparability lists that get shared around:
Here's a full compatibility list resource.
The ones I'm enjoying at the moment are:
Melatonin
Death Squared
Super Meat Boy
Binding of Isaac
Enter the Gungeon, Celeste and Spelunky 2 also work very well.
is it being maintained? I tried cassette beasts at one point and it was unplayable
Don't know. But just teat any game you like the look of and if it doesn't work then 🤷♂️
Community to talk about emulation & roms.
RULES:
1.) No bigotry
LINKS:
Emulation Wiki - Your source for everything emulation :)
[WIP] Emulation Links Wiki - My personal wiki for emulation links, please help contribute!
r/Roms Megathread - Megathread of Roms
RetroArch - RetroArch is the popular front-end to libretro which is a simple API that allows for the creation of games and emulators.