Where did those ppl exist exactly, in this forum? In a particular private server forums? In a specific group/clan forum?

Because i can try and search for some of them by using the internet archive, the wayback machine, i can also check ragol.co.uk forums to see if they ever made an account there, it always worth the try to see if the registration email is still valid.
Reddit can also be a good source for information, not many ppl post but there is a considerable ammount of ppl watching that subreddit