So I did a music breakdown for this series alongside a few others a while back, and these are the tracks that my music identifier wasn't able to detect.
All the other known tracks used are sourced from Audio Network & Extreme Music, so most likely the unknowns are sourced from them.
Refer to the video below for timestamps:
Track 1: 0:00 [Intro]
Track 2: 4:24 - 4:44
Track 3: 5:14 - 5:31
Track 4: 6:58 - 7:10
Track 5: 7:29 - 7:47
Track 6: 10:33 - 10:39
Track 7: 10:46 - 10:54
Track 8: 17:00 - 17:37
Track 9: 17:38 - 17:56
Track 10: 18:37 - 18:45
Track 11: 18:46 - 18:56
Track 12: 18:57 - 19:37