Another coming to say Brandon Sanderson!
Start with Mistborn era 1 (trilogy), try the older standalones (Warbreaker and Elantris) and move to Stormlight Archive, which is probably my favourite book series of all time. It's set in a world in war-time but it's much, much more than that. The way it deals with mental health, personal growth, and interpersonal relationships is stunning.
If you liked ACOTAR then try Throne of Glass and Crescent City (also by Sarah J Maas). ToG is the easier read but give it a bit of time - it takes a couple of books to get genuinely good IMO (she started writing the series as a teenager and it feels a bit YA to start, but does improve). CC1 is worth it once you get past the massive info dump at the start.
The October Daye series is great.
If you like Romantasy then the Jennifer L Armentrout Blood and Ash series and the spin offs are also good.
I was coming to say the Raymond E Feist Magician series is good too but see you're a fan of his already 
Jim Butcher's Codex Alera is light and fun. And if you like Urban Fantasy then The Dresden Files is grand (although, confession, I stopped at about book 11, which was fine).
Dresden gets so much better after book 13! I've read both series more than once (the audiobooks in particular are very good) and I do like them (I'm actually listening to Cursor's Fury at the moment!), but Butcher isn't exactly known for writing women well.