Elves can be Vampires, there are several examples in Forgotten Realms lore. However, more importantly and relevant to BG3, is that Bodhi from BG2 was an elf and a vampire

Actually no. Bodhi lost her elvenhood and then became as vampire to stay alive. So basically she was explicitly a non-elf vampire.
That's true about Bodhi. However, it's not true about another elf - Aerie, whom Bodhi
can potentially turn into a vampire. Unless Aerie counts as a gnome?