I agree about dog-people. Heck, they're one of the oldest fantasy races - the ancient Romans talked about them! You could throw in wolf-people and jackal- and coyote-people as variants/subraces/refluffs.
I'm also surprised that I haven't seen a UA for kemonomimi (lit. "animal ears") aka anime furries. Especially kitsune*, who have a lot of interesting lore, but it would be really easy to extend to all sorts of other types like cats, dogs, tanuki, bears, etc. (I can imagine them struggling to get something past 70% approval, but the lack of trying seems odd to me.)
* or better yet gumiho, although if you have both that's even more interesting lore
Also plant people seems like a major fantasy trope that they haven't addressed in a while (they had them in 4e).