Jason Bourne's martial arts

Is there a definable style to the brutal practicality of Bourne’s fighting? Is there any real world analog? How much of the shown effectiveness is just Hollywood? Is there a definable answer?

The type of martial arts used by Jason Bourne is a combination of Filpino Kali along with Bruce Lee’s Jeet Kune Do. Krav Maga is widely mistaken as being used in this film. It is not, as Matt Damon was trained by Kali/Jeet Kune Do expert Jeff Imada. The film’s uncredited fight coordinators are Damon Caro and Jonathan Eusebio. Both are trained in Kali and Jeet Kune Do and neither are trained in the Krav Maga.