These seem like good Ideas, and I'd like to see these categories made to real ones :)

Full series 100% relay (2, 3, and 6 players)

Red ball 1-3 100% relay

RABB 1-3 100% relay

Red ball 4 100% relay

Extended series 100% relay (let me know if you need me for RB4 mobile if this category ends up an actual one)