Made as a request/suggestion, this is a newly minted one. It's sort of the Oathbreakers of Monk - a Monk that's lost their way, but not their edge.
Took this one as it seemed like a neat idea, and I didn't have a Monk subclass out yet, so the completionist in me couldn't resist, but I don't have a lot of monk players in my games, so not playtested yet.