Just in terms of aesthetics and artistry. Not writing and other story elements, this is purely my favorite artist( colorists, penciling etc) in no particular order:
Roc Upchurch - Rat Queens
Roc Upchurch - Rat Queens
Jamie Mcklevie - Young Avengers and The Wicked + The Divine.
Fiona Staples - Archie and Saga.
Amy Reeder - Rocket Girl and Madame Xanadu.
Steve Cummings - Pantheon High and Wayward.
Jim Lee - Various Marvel and DC works.
Joe Eisma - Morning Glories.
Steve Dillon - Hellblazer and Preacher.
David Finch - Various Marvel and DC works.
Stjepan Šejić - Rat Queens, Sunstone, Death Vigil, Aphrodite XI.
I said no particular order but I'm pretty sure you can guess who's my favorite!