Well, space witches in general, but bonus points if they're queer AF.
This was inspired by coming across the author review blurbs for Gideon the Ninth by Tamsyn Muir.
"Lesbian necormancers explore a haunted gothic palace in space! Decadent nobles vie to serve the deathless emperor! Skeletons!" - Charles Stross
"This crackling, inventive and riotous book from an original voice is a genuine pleasure. Also the author is clearly insane." - Warren Ellis
To my new Space Witch reading list I add:
The Stars are Legion / Kameron Hurley - lesbian space witches, lesbian space warriors, weird creepy shit. you know, the good stuff.
Voidwitch Saga by Corey J White (Killing Gravity, Void Black Shadow, Static Ruin)
- can't remember if she's queer or not, but she's definitely a space witch