just call it something different. I believe the non canon DF is the batto Batto no mi model: vampire.
the canon one could be Hito hito no mi model: Dracula or something
the canon one could be Hito hito no mi model: Dracula or something
Jokes aside, I don’t know, it’s a bit on the nose, technically Dracula is public domain, but it’s not really what you can describe as a “vampire” merely the name of the historical figure, who later on inspired the vampire myth, but, I don’t know, since Oda decided to also use Western mythical dfs with Pegasus, wouldn’t for your theory something like Tchernobog no mi be better? Has similar descriptions to a mythological vampire, and, well, it has less lame powers than a vampire df, it also means “black God” so, eh, I guess BB has some connections.