Reach the indicated rank to unlock the corresponding style in Build-A-Label mode.

Beat Boxer: "Mogul" rank.
Black Panther: "Producer" rank.
Ghetto Blaster: "Hustler" rank. Note: This is also available by default.
Jah Breaka: "ICON" rank.
Muay Fly: "Hit Maker" rank.
Street Kwon Do: "Hustler" rank. Note: This is also available by default.