According to the one punch man power rankings where would the different characters be? Obviously omni man and Thraag would be S tier but duplicate doesn’t seem that powerful I’d argue C tier maybe stopping street crimes

If Nolan or worse Thraag we’re to threaten earth I dont even think Tatsumaki and Genos could stop either one of them even if they attacked individually.

How do we know? A villain deep sea king was fighting genos and other A rank heroes at a stand still, Omni man for his part won against fighting an elite team. I would put Nolan. High A or maybe even S rank. I’d even argue the alien that invaded earth would be Thraag level