Books with ride-or-die PLATONIC relationships

I’ve always loved books with intense but non-romantic relationships—friendships, familial relationships, etc, that are just as important (if not more) than any relationships with love interests. I’m thinking like Locke and Jean from the Locke Lamora books as my model for this. Not super picky on genre as long as the book’s halfway decent—fantasy, sci-fi, historical, YA…I read all sorts of things haha. Any good recs for me??