I want to ask community for help to tag and Ban this cheaters for BAN evasion and bounty abuse
If there's a ban evasion issue going on here, there really isn't a need for DT members to tag these accounts. The only thing you need to do is report them to the moderators. Mods will probably see this thread and act on it, but there may be a delay in doing so. Just be patient and I bet you that all of these alt accounts will get banned as well.
What I advise is report again the users' account here involved to mods and if it hasn't been put into action then a tag is worth it to them, I think these are really alts and just controlled by one person. Good luck!
I don't think tagging them is worth it if they're going to get banned anyway--which I have little doubt they will. If they were just bounty cheating alt accounts but none of them had gotten a ban, I would definitely try to get DT members to tag them. That isn't the case here, though.