When I was a teen pup Mitch was my drummer! Never heard a rock drummer play so creatively.. In an early interview he was quoted as saying he didn't listen to rock drummers but jazz drummers like Elvin, Philly Joe, Tony, and Max.. His work on "Manic Depression" was an obvious jazz influence..
I always thought that "Third Stone from the Sun" showed a lot of jazz influence - mostly in the first moments before it gets into the more regular groove and then later into the tune he gets the jazz groove back. Also jazzy is "Up from the Skies" too.