This thread has been updated since my last update in April.
I've added the following update to the OP;
Moderator Message:
9/19/2020 Update: Please use the 'Search this Thread' feature found at the top of the first post on each thread page to see if the account name you're trying to report has already been posted by someone else. If it turns up no results, feel free to post your findings! If someone else has posted it, please do not post again. This will cut down heavily on unnecessary work and prevent clogging of the thread. Thanks!
I also clarified in bold and underline that this thread is not for in-game names. This is purely for usernames only. Any in-game names will be disregarded, and likely deleted to prevent clogging of the thread.
Thanks guys. o/