What Are the Best Stephen King Books That Aren't Horror?

Hey everyone,

I've always been a fan of Stephen King, but lately I've been looking for books of his that stray a bit from the horror genre, which he's most famous for. I know he’s much more than just a master of horror, and I've heard of several works where he explores different themes.

Could anyone recommend the best King books that aren't centered around horror? What do you think are the best reads of his outside the horror universe? I’m open to suggestions in fiction, drama, or even something more psychological.

Thanks in advance!