I may not do all of these because I'm indecisive.

Nana: Celine Dione if I ever do her

Mina: Rhianna

Ochako: Camilla Cabello

Tsu: Britney Spears

Miruko gained MAD RESPECT so Beyoncé

Jirou maybe Orianthi if I do her

Ryukyu is Melanie Martinez because they got that fantasy vibe going on
If not she'll be Natalie Paris or Katy Perry

Mt.Lady is Ke$ha

Komari if I ever do her, Marina and The Diamonds

Toga is Billie Eilish if I ever do her

If you can think of anyone else, I'll do it as a request

NEMURI IS MADONNA