Well they did after they'd already appeared and to me they were throwaway lines from Excalibur. They could've done a better job to make them sound more important.
UFC has a pretty large fanbase and a decent amount are crossover fans but the sport is niche. At this point JDS,Arlovski are ex champs and have been ex champs for a while. Jorge masvidal is probably the most currently relevant but again unless your a ufc fan you still wont know who he is really is Pvz as well and her bf fights for bellator pretty unknown guy.
Without paying for fight footage from ufc and bellator they really couldn't do much better then what they've done.
Excalibur mentioned who they are by name and who were ex ufc champs and others were just mma fighters from ATT.
Then we've had numerous promos from Dan Lambert where he again mentions being with real credentialed fighters from ATT while putting over Sky and Page.
By this point they've mentioned who they are quite a bit actually.(again during the match JDS was in as well)