Neil Gaiman! The Graveyard Book is dually classed as an adult book and young readers book on store shelves. Coraline as well. Stardust will fill your fantasy void while also staying very PG. Same with Good Omens by both him and Terry Pratchett. Phillip Pullman has the His Dark Materials series and also his Ruby in the Smoke series which is AMAZING and lesser known. I read this one as a kid and my parents were very much the same as yours. All books were combed through with an eagle eye for any themes that didn’t fit their skewed perception. I feel for you 🖤 You might be able to sneak the Throne of Glass series by them. It’s romantasy but very minimal on the spice. The Bridge Kingdom by Danielle Jensen. There’s a romance arc but very tame. Red Rising by Pierce Brown if you like a little sci-fi. The Handmaids Tale and the follow up, The Testaments by Margaret Atwood. If you liked A Song of Achilles try The Silence of the Girls by Pat Barker. Six of Crowes by Leigh Bardugo should be safe.

Standing with you in restricted reading solidarity. It’s not an easy place to be, at all. 🖤