Shemeska
Adventurer
Fiends - I spent over two years in the campaign of my first storyhour focused largely on the Yugoloths, and damn was it fun. You've got so many types of possible motivations and such a spread of subtypes to work with. From a little wriggling larvae to the Oinoloth and beyond, so much potential it really just outstrips most other monster grouping in breadth and depth.
Next campaign and next storyhour I'm focusing on a combination of baatezu and psurlon/githyanki.
Next campaign and next storyhour I'm focusing on a combination of baatezu and psurlon/githyanki.