Jake One - coming correct with his boombastic glory day hip hop type ish with a twist of newness that could be marketable.
Kanye West - is the best cat out period. He's got this organic type sound that's big and bumps, always flips samples correct. revolutionized the way cats picked their production after the work on Jay-Z Blueprint (which i consider classic).
Just Blaze - same reasons as Kanye West. He can also make those New York street club bangers that are keyboardy. Real catchy sound.
Neptunes - whoever doesn't like them is just a hater. That's all I gotta say. Flip that hip hop, rock, pop, watever it may be. Real catchy ass sound that's original. Been feelin em since NORE's Superthug. They did quite a few jawns on Justin Timberlake's album. I got a promo advance copy. Let me tell you, go cop it. I'm dead serious.
Dr. Dre - we all know why.
DJ Quik - we all know why. He gets respect but i dont think he gets enough for what he's done.
Hi-Tek - if you don't know go listen to Reflection Eternal. Raw boombap shit, laid back smooth shit, RnB type jawns. Flips his samples properly.
Timbaland - repetitive at times. but simply innovative.
DJ Premier - Legendary.
Other cats:
DJ Spinna (go listen to J LIVE)
Domino (Hiero)
Stoupe
Large Professor
Earthtone III
Organized Noize
Chops (my boy)
ILLmind (my producer)
Boskeez
Rick Rock
Warren G
too many to name really.