I can't honestly say much more about them as I've never used them only discovered recently, and I'm in the middle of a play-through.
At least, that's how he (and users) describe his mods. But Simon's are much more lightweight and closer to the mechanics and implementation of vanilla. Simon Magus is a great mod author who has sort of followed in the footsteps of EnaiSiaion, making mods very similar to Ordinator, Apocalypse, etc.
