One of the most innovative guitarrists of the current era is (for me at least) Tim Henson of Polyphia. Modern, innovative guitar playing has changed a lot in the last few decades. You probably won't find the most innovative players in classic Hard Rock or Metal Bands. You can find them instead in different sub-genres which have a deep focus on the "newer" style of playing.

https://www.youtube.com/watch?v=OkHD4OVjS4E https://www.youtube.com/watch?v=9_gkpYORQLU