Thread:TyLee/@comment-38025530-20190415112833/@comment-25501246-20190415124848

Those are just Quirks being listed, to allow the readers to know what Quirks they use (and that Tamaki is aware of them). There's no significant evidence those are aliases, thus it falls within speculation since neither the police nor the heroes call them anything else (the detective even goes "That's Setsuno").

There's also the fact that the other Eight Expendables are never referred like that, so those 3 would end up sticking out in an inconsistent manner. No one ever refers to Shin Nemoto as "Confession", for example.

The only members of the Shie Hassaikai that are consistently referred after their Quirks are the leaders: Overhaul, Chrono(stasis) and Mimic(ry).