For Ryujinx there's Ryubing is the new main fork with new features by GreemDev, Kenji-NX is another fork, more of a middle-ground between new features. Finally Ryujinx Mirror is minor fixes to the last Ryujinx commit (last updated 7 months a go).

Yuzu has Torzu (somewhat infrequent updates) and as the name implies, it has a Tor site. The new recommended kid on the block is Eden which emerged because of drama with Citron. The main Citron dev, Zephyron is a massive corporate cock sucker and has a massive power tripping ego that wanted to implement a legitimacy check for the emulator. You would have to run a homebrew program on your hacked Switch which would upload some dump/file to Citron's server to verify you are a good boy and be able to use the emulator, and Zeph kicked everyone on his Discord that wasn't verified and closed invites for a bit. As of now Citron has not had a commit for 1 month.

Do note that GreemDev is (was?) a mod in Citron's Discord and did participate in the mass kicking/banning and added a blacklist for running the Citron Switch verifier homebrew in Ryubing. His other commits don't seem to be malicious but a word of caution.

[–] arararagi@ani.social 3 points 20 hours ago

Thanks for the ryubing, I using the minor fixes one without knowing