Zelazny's Chronicles of Amber are classics and the first cycle is very delightfully narrated
(Second cycle is narrated by Wil Wheaton so assess your personal Wesley tolerance)
Scholamance series by Naomi Novak! I fully support Nathan's endorsement, the books are so good, smart and funny and with twists and turns
Have you read the Mars trilogy? Very his science fiction with a political science theme. I also recommend The Bear and the Nightingale (I think it’s the Winter Witch trilogy?). Caraval is another good trilogy and very easy to read.
Son of the Black Sword by Larry Correia. If you like it, the rest of the series is here: