Lord Zarkov:
Vampire Wars/Carstein trilogy are good, if a little ott in places
Genevieve a collection of 4 books by Jack Yeovil mostly about the Vampiress Genevieve (although one of them is mostly not about her and the fourth is a collection of short stories of which about half are about her and the others expand on other major characters). They’re all very well written though and it’s good as it shows vampires other than the usual power mad or twisted sorcerer view that gets into most books.
The only downside is it was written quite a while ago and the setting has move on a bit (it’s set around 1st Ed WHFRP, definitly pre 5th (and possibly 4th) ed WFB) and so many of the major human authoriaties are different (i.e. electors, Clergy, Monarchs etc).