I'm not sure...I like a lot of them.
I guess the Nature spirts/elementals/nymphs are one of my favorites. I believe in the "concept" of them, but not that they REALLY exist.
I also like elves, but not the Santa Claus like elves. Those I don't really care for. <_<
I like the Lord of the Rings elves, I thought they were pretty neat creatures. ^^
And I
vampires. Not the dreaded Twilight wannabe vampires, but the REAL vampires.
And I like human-animal mixes.