They just lack a Tolkien to alter and popularize them.
Elves and dwarves aren't special other than that.
Right, so for the majority (I would imagine) they are not really 'tropes' in the sense of Elves = Live Long, Graceful, Magical and Dwarves = Short, Mountains, Miners, Treasure, Gruff.
Spider People are what?
Talking Rabbits are what?
I'm simply answering the OP. "What is the appeal of..." The appeal is the established history, framework, and tropes that provide a grounding and framework that most, if not all, people can click with and understand.
Your examples actually prove my point. Spider people may have tropes. I dont know them. I doubt the majority do. Cat people may have tropes, I would expect they would be Anime based at this point..., but I dont know them and I doubt the majority do.
These other race types do not have the established spread of history, beyond Tolkien, across multiple worlds and realms and fictional universes, and that is the answer to this thread.