Yeah forget PII. conspiracies are planned without paperwork.
Given that this alleged conspiracy seems to have swelled to a cast of thousands, no ONE person could have afforded to commit anything to paper for fear of bringing down co-conspirators, and that's just those who were known to them. As the tentacles of this alleged conspiracy allegedly stretch far and wide it's highly likely that no one, save perhaps Mr Big, whoever HE was, knew all who were involved.