It's really funny that they are trying to hide the characters with ??? but the japanese version of the website literally just has their names listed if you use the filter

All the playable Orion girls

Norika Umihara
Song So-ah
Xiao Lau
Diana Scola
Alice Berardi
Elma Kitty
Gabriella Amati
Kakehashi Tsugu
Monica Sala
Yurika Beor
Sabine Nojima
Eva Gordon
Li Yucheng

Also this bitch is actually a dude