I think Underworld started out as town and was recruited to cult. Mafia rolecrushed and poisoned me on the same day and Underworld asked me how did I get rolecrushed at night which would mean she had no info on this if she was mafia.
Jojo looks like the cult leader who culted Underworld because on day 1 he was scum reading her and on day 2 he town reads Underworld out of nowhere.