I don't have access to the transfer portal itself, and maybe if I did, I could answer my own question.
But when I consider that between WrestleStat, Flo, and Intermat, the records of the transfer portal are overlapping in many cases, but there are significant portions which are also just unique to each source. Is the format of the transfer portal very difficult to intepret which leads to all of these differences in reporting?
We then have cases of wrestlers announcing something on Instragram/Twitter, but it just doesn't get picked up by any of the major sources. So my list above attempts to be a catch all of all of the major sources and twitter feeds, but if you see anything you catch, please let me know. I am only one man.