What are all the races of elves?

Hi vgp. Welcome to Mythic Scribes. As a fantasy writer, it's your job to make things up. There are no official 'races of elves', it's all up for you to make up.
If you are looking for the historical/mythological definitions from old Norse religion, then there were only 'light elves' and 'dark elves'. If you are looking for Tolkien elf races, there are Vanyar, Noldor, Teleri, Sindar, Nandor, Silvan, Falmari, and Avari. If you are looking for the most common interpretations, there are high elves, wood elves, and dark elves. But really, in the end, it's all up to you as a writer to decide.

 

Also, I believe this would be posted in 'World Building' or 'Fantasy Discussions'