Xamkou
Bluelighter
What are these fabled cathinones that escaped the ban that I've seen people talking about, anyone know? 

None; the cathinone ban banned all the cathinones. Hence the term cathinone ban.
None that I would touch with the aforementioned bargepole. Cast your net wider - there are actually some amazing RCs around at the moment. But they ain't cathinones. Thankfully.