Looking for books with queer characters that don’t focus on them being queer and/or books that are queer historical fiction – not YA

I’m looking for any novels that have queer main characters but the focus of the novel is not on them finding love (so no novels where the plot is strictly romance – that can certainly be a facet but not the primary focus) nor their experiences with being queer. Basically, I want stories in which queerness is incredibly normalized. I also don’t want to read any children’s lit, middle grade, or YA right now.

I’ve read Monstrilio and really enjoyed it. That one has a lot of “casual queerness.” I also loved Dark Matter by Michelle Paver.

I also tend to like books where there’s a level of isolation, especially in a historical time period – settings in the arctic/polar region or in wilderness settings (Wild West, Australia, the Great Plains, etc.).