Fedor Emelianenko vs Jon Jones Ronda Rousey vs Christine "Cyborg" Justino Anderson Silva vs Georges St. Pierre or Brock Lesnar vs Dewayne "The Rock" Johnson (in an actual octagon fight)
Lesnar vs Fedor would generate record breaking numbers that's the fight everyone wanted in the day...Silva is damaged goods and Rousey would be a great fight also but wouldn't stack up to a lesnar showdown with Fedor which should be on your list,not JJ.
Would have been Anderson/Gsp a few years back (Damn Zuffa dropped the ball on that one). Now? It's more a case of let's put Rousey, Connor, Jones and GSP all on the same card and let's see what numbers it does... Arguably 2-3 million (IMO).