Religion of Evil: Mostly averted. While there has certainly been historical evil, there have been very few actual entropy-cults. For the most part, the evil have been more interested in the personal benefits than philosophical commitment to the Death of Everything, even if their actions are entropic as a side-effect. Much the same goes for those religions which the Church of the Flame has strong ethos-based differences with; one can be mistaken without being an active entropist.
(That being said, many people can probably list for you quite a few religions which they think are evil, even if they’re not of evil, a subtlety which is probably lost on many non-theologians.)
You might also classify the control memeplexes of any number of dysfunctional seed AI under this, but really, they’re more religions of control rather than strictly evil.