Pretty much everything Sanderson has done is good, though some are geared towards YA. All his book and series are slightly related, that is they take place in the same universe (what he calls 'the omniverse'), and you will see some of the same characters pop up in different series...as some are able to travel worlds/times/places.
Before you read Stormlight, I suggest you read Warbreaker. There's an interesting origin story/character that shows up later in Stormlight. Warbreaker is a stand alone novel that is a quick read.
I've read a ton of fantasy. For something a little different in the same arena:
Book of the Ancestor series by Mark Lawrence. A little YA, but interesting and very different world building. Also a female protagonist which is different.
The Gentleman Bastards Sequence by Scott Lynch. Very interesting caper series
Powder Mage series Brian McClellan
Raven's Shadow trilogy by Anthony Ryan
Six of Crows duology by Leigh Bardugo