Stormlight Archive by Brandon Sanderson
Only has 5 books, but they're chonky and book 5 is the end of arc 1. Peak epic fantasy, with an even larger epic happening in the background if you choose to look behind the curtain.
Dungeon Crawler Carl by Matt Dinniman
Starts as "haha funny man in boxers rescues his cat", ends with "this is a truly important critique of late-stage capitalism". Book 8/9 just released. Wonderful series about the indomitable human spirit and dealing with loss under the veneer of an intergalactic comedy game show.