Obviously, they don’t have to slide into the cozy genre. But what books do you cuddle up with during a thunderstorm, or your variable weather of choice? Personally, Becky Chambers has become one of my favorites. I also read LOTR when I need a “good guys doing the right thing just because it’s the right thing to do”.
Another vote for Terry Pratchett. I also find myself coming back to The Autumn of the Patriarch and A Hundred Years of Solitude over and over. They are not my favorite books, but they are sort of a habit, they’re definitely the ones I’ve re-read the most.