Start with high-confidence speculative erotica books, then narrow by subgenre or adjacent topics.
Vampires Are Forever
Lynsay Sands
Real Vampires Live Large
Gerry Bartlett
Real Vampires Hate Their Thighs
Zen and the Art of Vampires
Katie MacAlister
Zomromcom
Olivia Dade
Girls Who Bite
Delilah Devlin, Delphine Dryden
Smut Peddler Presents: My Monster Girlfriend
Amanda Lafrenais, Andrea Purcell
The Poisoner
I.V. Ophelia