Sidenote: I know some downplayed Bill Evans' influence, but I wonder how Charlie Haden was seen in that context. Also, in the book Baraka admits to listening to Brubeck in college. (As with many past embarrassments, I'm sure the "in college" designation was necessary to minimize such a shocking transgression!)
Since late Coltrane, Sun Ra, Archie Shepp, etc., who would you consider a real innovator (Zorn maybe?) in the genre currently- or at least in the past 10 years or so? I'm not arguing against the possibility, but rather fishing for recommendations...
I'll choose to take your question at face value. In no particular order: John Butcher, Peter Brotzmann, Matt Shipp, Frank Gratkowski, Evan Parker, Kidd Jordan, Peter Evans, Nate Wooley, Mary Halvorson, Paul Flaherty, Chris Corsano, Ken Vandermark, Mats Gustafsson, Joe McPhee, David S. Ware, Frode Gjerstad, Anthony Braxton, Ingrid Laubrock, Jean-Luc Guionnet, Phil Ochs and ROVA. There are many others. Some cited have been around for a while, others are fairly new to the scene, but I think all that I listed bring something vital to the music.