OP, if you want to, you can change the thread title from "someone" to "Apt2022" so anyone taking a glance at topic list on this board would get a better understanding of the situation. Second, though I am not sure how he can get out of this situation, I also advised you to at least invite Apt2022 to this thread by PMing him, so he can defend himself or give his side of story. It's an ethical thing to do.
Yes, I think it's better to name that guy and send the manager this link to ban him from the campaign I don't think he can defend his action because he has a history of cheating and ban evasion, it's intentional.
He followed Cheezcarl's channel and beat him to the registration he register ahead of Cheezcarl so there is an intention to cheat but if the manager always checks the details he'll find out that the submission does not belong to the cheater, I hope the manager is good when it comes to details.