They're too irrelevant.
How many of them can you name?
Vados, Yurin, Kale, Caulifla, Ribrianne, Kakunsa, Lilibel, Helles, Vikal, Marcarita, Nink, Pan, & Bulla/Bra. Plus Future Mai, if you want to count her. Plus, I'm forgetting the names of the U10 Angel & the Fireball that has exponentially strong punches, plus the cat woman that Vegeta fought early in the ToP.
EDIT: Oh! And the Pride Trooper/woman Gohan "cheated" on Videl with... I can't remember their names, though. Nink, Lilibel, catwoman, & Vikal may not do much later on, but the angels are likely to be major players going forward in this arc alone (As well as Helles if the GoD's fight back), the female Saiyans & Fireballs are likely to remain relevant if we get a "Everyone Survives/is Resurrected" ending, And we know Pan/Bra are going to be relevant thanks to End of Z (Hopefully Yurin does, too, so long as Tien remains relevant. Which I hope for, but doubt).