I'm calling it right now:

Cool type.

Mashiro might be the event 3 star (most likely Powerful type) Tsukushi's probably going to be the event 4 star, Touko's going to be the gacha 3 star, and Nanami will be the 2 star, since her birthday is coming up. (Possibly cool type)

This is kinda just a reminder for myself because I'm just using it to get my team ready. Even though I'm probably wrong.