Demons and Giants have blood, they are elementals.
Shadar kai and death giants have blood, they are shadow.
Devils have blood, they are immortals.
Fey have blood.
Mind flayers and beholders have blood.
Too much wording.
I think it's a simple matter of setting the vampire metaphysics right.
Blood is awkward, but having the metaphysics based on draining lifeforce and it works fine.
I'm contagious...Setting setting
Slow Disease. You cannot reach the final stage of a disease.
Vigor of the Night: At night or under complete darkness, you gain +2 to saves.