What mods that bring classes from other games are still working?

I see that mods like D3 classes and Dawn of Masteries "imported" classes from other games and translated them to GD.

D3 classes and Reign of Terror appear in GrimTools so I have to assume they are still valid.

btw - what is Reign of Terror?

I see older mods, like for Cataclysm (classes from WoW) but it's from 2016. Is it still valid / similar to today's GD?

What is Dawn of Masteries? It looks like it combines a few other mods but not too clear.