Why Is J Dilla So Popular? I Hear His Name Religiously.?

I Know Marley Marl, Primo, Pete Rock, You Name It. Just Blaze, D.r. Period, Ayatollah, Chief Xcel, Whatever. But, I Listened To Donuts. I Recognized The Samples. Why Is He Special? He Has Good Taste In The Lp He Is Sampling. The Actual Loop And Drums. Not Impressive. Can't Doom Pull Loops Like J Dillas Out Of His *** All Day? I Know Jay Died. Is That Instant Credit? His Kicks Aren't Primo Or Beatnut Kicks. What Is The Big Deal? Am I Hearing All The Wrong Songs? In Addition, What Is A J Dilla Style Beat? I've Read That Description But I Don't Know What That Means. I Know What A Kanye Style Beat Is Or A Neptunes Or Alchemist Style Beat is Or Rza Or Prince Paul or Dre's Hired Hits. What Are The Hallmarks Of J Dillas Production? What Is His Signature? I Need Direction.