Stuart Zender, mostly.
When I first heard Jamiroquai, way back in 1993, I couldn't believe my ears. It was the music that I'd waited my entire young (at the time) life for. I was really captivated by the bass particularly. There was/ is something about early jamiroquai and Zenders playing which simply locks into my soul. I wanted to express some of that groove that I was feeling ... So, I went out and bought a bass.
More than any other player that I can think of, Zender has left the strongest stylistic influence on my playing.