What is the best possible way for me to ensure that a repeat scammer is banned for good across Reddit?
I tried to use reddit.com/report, and it can't find my "primary" sub. Even if it could, I'm worried I will miss something important. In short, I moderate 7 communities that are essentially the same, and when a scammer gets banned from one, they get banned from all of them, but sometimes I find their new account on sub A and B, other times B and C, and sometimes just A, and so on. I'm not sure selecting just one sub will be enough.
Furthermore, I have some evidence I would like to attach that should help with confirmation that they are indeed the same person. For one scammer in particular, I have a chart/spreadsheet that helps to visualize the overlap in profiles and aliases they use. There are 29 accounts that have been banned from Reddit entirely, and another 14 that are not yet banned, 9 of which are active in other communities. Some communities have absolutely refused to ban them, despite presenting their mods with a mountain of evidence, so I want to try to remove the active accounts for good.
For example, 15 of his accounts link to one particular ArtStation portfolio, and of those, 8 have posted a second ArtStation portfolio. From the accounts using the second portfolio, one can identify at least 7 more accounts, repeating for other portfolios until you can be confident that at least 43 accounts are the same person. Most of these portfolios have artwork stolen from at least half a dozen sources and they claim them as their own, meaning they could also possibly be nabbed for Impersonation or Manipulated Content.
Should I just try reddit.com/report for the second most active sub and hope for the best, or would admins prefer I link to each name in r/ModSupport ModMail with some attached evidence and a list of related communities I moderate? Or something else, perhaps?