Yeah, when JK was mentioned, I was going to say that to me, their sound is a mix between Stevie Wonder and Johnny Hammond's Gears.
The Mizell Brothers' sound is quite present in the Acid Jazz scene for me.
Really good list up there, @Steveh73.
Speaking of Gemigo, Rasputin Stash's "Devil made me do it" it's really good too. Is this sound what some call 2-step?