Who is the dopest producer in Hip Hop?

I'm sure I'll get a lot of different answers. IMO, it used to be Dre,
but no longer. He takes too long putting out tracks. We've been
hearing about Detox since 2001. I don't care if I ever hear it. The
title now goes to Swizzy. Most of the time I can tell one of his
tracks when I hear it, but he has thrown me off a few times especially
with Dr. Carter(Lil Wayne). I had no clue until I looked at the
credits to know he did the track. Kanye's up there, Dilla(R.I.P.),
Premo, 9th Wonder, Timbaland,etc. You do hear him a lot on his tracks
which is a dead give away, but he was on Fabolous' Return of the
Hustle which was not his track, but Just Blaze's. If someone can give
me a reason why it isn't Swizzy, then you'll get the best answer.
Like he said, his catalong is a "senior citizen."