There are a lot of great artists working in the industry today. Some of them get the recognition they richly deserve - guys & gals like Ivan Reis, Gary Frank, Jim Lee, Francis Manapul, Frank Quitely, Doug Mahnke - but others do not, either in assignment or in general 'buzz' or recognition (in my opinion, Mahnke does NOT get the recognition he deserves, but that's only because he's not only one of the best in the industry, he's also the hardest working and the fastest. He deserves to be in the upper echelon, a draw on his own).
Dale Eaglesham - He's one of the best character actors in the business, his figures full of body language and facial expression; he builds them psychologically. But he also composes beautiful shots and has an endlessly creative sense of design. I know he's on Secret Six by choice, and that is exciting, but here's hoping that if/when that runs its course he's put on something appropriately high profile. I would love him on a Shazam book.
Aaron Kuder - I think he's rightly loved by Superman fans, but outside of that he doesn't seem to have gotten the recognition I would expect, certainly not the recognition of his friend/stylistic forebears Frank Quitely & Chris Burnham. Not only are his figures some of the most kinetic in the business, he has probably the best and weirdest sense of design at DC, and he's constantly experimenting with storytelling tricks and techniques, a la Manapul. Perhaps the most 'forward thinking' and experimental of the bunch.
Mikel Janin - It's long been known that he gives wonderfully 3 dimensional figure work without sacrificing naturalism or expressiveness - a combination that makes him a rarity from the start - but on Grayson he's been allowed to fully stretch himself, experimenting wonderfully in a Steranko-esque fashion with page layout and design and storytelling tricks. Never arbitrary, they always serve the story and the atmosphere. Like Kuder, he's doing some of the genuinely smartest work at the company.
Karl Kershel - Kershel used to be a regular in the mainstream, then disappeared to do his own creator owned webseries (which was excellent, check it out). Upon his return (on Gotham Academy), his work is finer, and more expressive than ever. Seeing his work is like seeing the very best, cleanest cartoon imaginable. It's like nothing else on the shelves.
Howard Porter - Porter has been around forever, so it's easy to marginalize, but he's doing some of the best, most detailed world building and world design in comics. His work is almost a neo-kirby - at times rough, but always bursting with energy, and with some of the best looking, most inventive set design in the business. No one is talking about how great his stuff is, and that's a shame.
Patrick Gleason