Ones I’ve played (mostly when I was younger) and enjoyed a lot:

Teeworlds

Warmux

SuperTux

Cube 2: Sauerbraten

Paradox doesn’t really bother.

Even the games that have native Linux ports regularly have massive issues. Currently you can’t play CK3 multiplayer since it immediately goes out of sync, works fine with proton though. The Linux version also crashes much more.

Similar story with Stellaris, where every other update the clients become completely incompatible.

Which, as this video shows, client side AC can’t either. So there is absolutely 0 benefit to these invasive solutions, effectively making Server side AC the only sensible solution to game developers who are actually interested in safety (instead of syphoning of user data)