Gonna have a go at the soundtrack from what I know, there's some familiar sounding stuff from film scores but I'm not sure what they are exactly.
Vincent Touzery 1: Salwa - Thoom
Vincent Touzery 2: Empty White House - Mica Levi (Jackie OST)*
Vincent Touzery 3: Plasick - LILPEPTOMAN (aka Matt King)
Nik Stain 1: ?
Nik Stain 2: Popular - Nada Surf
Hugo 1: Plantasia - Mort Garson
Hugo 2: Surfing Pointers - Further
Hugo 3: ?
Genesis Evans/Kohlton Ervin*: Pharaohs - Tears for Fears
Aaron Loreth 1: ?
Aaron Loreth 2: Candy Pop - Len
Nolan Benfield & Friends: Carondelet - Jesu & Sun Kil Moon
David Clark/Pedro Attenborough: ?
John Francomacaro: His own guitar solo & then an overlayed song
Max Palmer 1: On And Off - Blair (Genesis Evans' band)
Max Palmer 2: Doot Doot - Freur, it's from Vanilla Sky
Max Palmer 3:
Cyrus Bennett 1: Day One Homies - Blair
Cyrus Bennett 2: Still In Love With You - Thin Lizzy
*Updated
also lol
Hugo Boserup got the sort of overloving edit that makes you wonder, did he die??