Hi! This was such a fun ask <3 Here are some mod team recs...
- Frankenstein by Mary Shelley
- Prince of the Sorrows (Rowan Blood) by Kellen Graves
- Wuthering Heights by Emily Brönte
- And Then There Were None and Murder on the Orient Express, both by Agatha Christie
- Strange Case of Dr Jekyll and Mr Hyde by Robert Louis Stevenson
As for BNHA fics...
Not sure how dark academia it is but I'd be hard pressed to pass up a chance to rec but i've got an angry heart by newamsterdam (krbk, rated T, mind the tags)