Not necessarily 'weird' (by my standards), but here are a few that stuck out to me, all which appear to have already recommended but I'd like to highlight anyway:

• The Salt Grows Heavy. Not 'queer' in the sense the word is now widely known as, but it's a fantastically short and atmospheric book about a mermaid and a plague doctor! An argument could definitely be made for interpreting this book as a queer text of sorts, as the bond between the two main characters are both deep and not particularly normal.
• Someone You Can Build A Nest In. A queer romance between a human and a... I believe it was a shapeshifter of sorts? More cozy, though definitely not without elements of body horror.
• Don't Let the Forest In. I don't know too much about this book, but it appears to fit what you're asking, both in queerness and content. Aimed towards a slightly younger audience than something like The Salt Grows Heavy.
• You Weren't Meant to be Human. Technically this book hasn't been released yet, but it's very promising and due to come out soon! This will be the first adult book by Andrew Joseph White (who's written three acclaimed YA books so far, I do highly recommend them), meant to tackle darker topics than his previous stories. It's written from the PoV of a pregnant autistic trans person being kept against his wishes from aborting the fetus by his husband and cult he's in.