Read all of the First Law series last year and man.. Its good stuff. I think Logan Nine-Fingers is one of my favorite characters ever.
Its definitely more dark and grimey than a lot of the fantasy I've read, but I think the characters are more interesting because of it.
Love to see some First Law praise here!
I don't think I've read an Abercrombie book that I haven't loved, his characters jump off the page and his style of writing is visceral and hilarious. People criticise the worldbuilding (or lack thereof) but that's because the Circle of the World isn't a character in these books, it's the backdrop. Besides, if you've read all the books, you'll realise that there's actually a shit ton of worldbuilding in there!
Also, Abercrombie is extremely fortunate that he has Steven Pacey narrating his audiobooks. The literal GOAT of audiobook narration (Steve Coogan as Alan Partridge aside).
The Powder Mage trilogy by Bryan McClellan. Its world is set in the middle of an industrial revolution where you have some more traditional mages running around, but also a new breed of mages that consume gunpowder to do all sorts of interesting things. It's not a very "deep" story but I enjoyed it nonetheless.
The Lightbringer series by Brent Weeks has a very good hard magic system. It explores themes of identity, the problems of adhering to dogma, and has a likeable main character.
The Gentleman Bastard series by Scott Lynch is a kind of swashbuckling adventure style story. Its world is very well developed (for the few locations the story takes place in) and have some of the most memorable characters I've ever read. This is one of those books that made me laugh out loud at some of the situations.
The Demon Cycle series by Peter V. Brett also has a great world setting. The world used to be very technologically advanced before demons started to invade from the underworld and nearly wiped out humanity. The world regressed to a more medieval style society with small cities and villages surviving only by the use of runes along their perimeter to keep the demons away.
Anything related to the fantasy genre