The classics are not always boring or less representational.

I read Carmilla, a lesbian vampire story (which is older than Dracula) and it was short novella with a pretty quick read. A lot of gothic books are like this.

I also like the mystery genre, and loved reading The Moonstone by Wilkie Collins. This is considered a proto-mystery book older than sherlock holmes, and has very good rep of women and anti-colonial narrative, and also having an easy accessible prose style.

Song of Achiles is a modern take on the classical Greek story, and this one has lgbt+ protagonists. I have other criticisms of the book, but if you like intense romantic slow-burn fanfiction, you can go for this and also, in the process, learn about the classical greek story.