Mitch Mitchell plays in the Elvin Jones explosive style with fast snare and cymbal riding coupled with more basic rock triplet bass patterns and big bombs. In line with jazz drumming he played within the snare/hi-hat/ride cymbal/bass drum arc with the toms as variations. His hi-hat and cymbal work is of the highest order and he used brushes on occasions. He is criticised as a busy drummer which is grossly overstating the case. More restrained drumming may have been more appropriate on a few tracks (that's Mitch's opinion). I really can't describe them as flawed, just that it could have been done differently and that doesn't mean better!
The thing that Mitch Mitchell had was incredible stamina especially in the studio as Hendrix endlessly worked though songs. He always responded to Hendrix's variations and worked from his arrangement. Mitch never defined his arrangement within the song - he bounced off Jimi. Live was the same, as it was need to follow Hendrix's improvisations and also fill in those gaps, especially when Hendrix did his stage act. It was behind these that Mitch took his solo over a droning bass line, usually at an exciting high tempo. He was a fast drummer - lightning at times and surprisingly loud for his diminutive statue. But as a true soloist he could not retain momentum - the solo on "Voodoo Child" looses momentum surprisingly quickly. This is a result of the lack of thorough formal training and the techniques that it provides to build a coherent solo - a limitation of no relevance in this band.
Mitch's critical asset was his explosive, intuitive responsiveness to Jimi. He could lay down a strong, lithe groove but then instantly react as Hendrix shifted gears or moved off in another direction. His style is in stark contrast to Buddy Miles who lays down a relentless groove which, when combined with the solid groove bass playing of Billy Cox, stultified Hendrix. Mitch's return freed up Hendrix and Billy Cox as well. I really cannot conceive of Baker playing this sort of role - his personal rhythmic impetus would also have impeded Hendrix but not as greatly as Miles.
After Jimi died, Mitch languished in some ordinary projects. The one that had the greatest potential was the Jack Bruce/Larry Coryell/Mitch Mitchell/Michael Mandell jazz/rock fusion band. The available bootlegs show Mitch playing in a jazzier style with some Bakerish inflections with the tom fills. What I find most interesting is that the rhythmic drive is coming from Jack, allowing Mitch to fill, reinforce and explode but in a controlled way. That was a good band that should have gone on but Jack got the irresistible call to join the Tony Williams Lifetime.
The third of the great British Rock drummers of the `60s, with a very different style and technique. His legacy is an indispensible part of that of Jimi Hendrix's ...'nough said.