Any new user registration link will work as long as they start with http://agorahooawayyfoe.onion/register/(Code) it doesn't matter who, or where they came from. I'm guessing all these are all referral links from the OP's wanting to get commission's from you.
Here is the OFFICIAL list of registration links from the Agora sub reddit
List of tested and fully working Agora Registration links.
All links were posted in the subreddit for Agora referral links and are working 100%. You can use every link, if you use them randomly every single user who provided his link has equal cances of getting some coins as benefit. Thanks, and take care, guys!