With mdayonliner  getting banned, it will be interesting to see if the other two people continue posting and if so if they end up banned with a ban evasion ban.

If they stop posting, it is fairly strong evidence they are the same. If they continue posting but don’t get banned, then there might be an argument they are different people. If they continue posting and get a ban evasion ban, it will be almost certain they are the same.