Hello person I totally do not know!
Erm, Moors are sort of on that borderline. It's basically up to you if your character wants to consider themselves an "enhanced vampire" or "another race". I've never really drawn a distinct line, and the series I got the Moors from doesn't state it; on there they're simply called "Shadows". And, sure, you can have a character that was turned into a Moor instead of being born one.