#4. Braun Strowman - Drew McIntyre's rumored original TLC opponent
Braun Strowman had a better 2020 than most. He was eliminated by Brock Lesnar in the Royal Rumble match, but he went on to defeat Goldberg to capture the Universal Championship after Roman Reigns pulled out of WrestleMania 36.
Four months as the Universal Champion isn't bad. He was rumored to be Drew McIntyre's original WWE Title challenger at TLC 2020, but a minor injury kept him out and changed plans. He will likely be ready to return by then and would have been a great WWE Title opponent for Drew McIntyre at the 2021 Royal Rumble.
While Sheamus and Goldberg may be on two different levels, the former would have been a great Royal Rumble opponent for Drew McIntyre. WWE can get away with a lazy story for the McIntyre-Goldberg match, using the latter's presence alone to market the WWE Title clash.
With Sheamus, there's a story. Had Sheamus been carefully pushed and protected, he would have had a good feud with Drew McIntyre. Even if he wasn't going to win, a good story between two friends would lead to an exciting match that would likely deliver in a big way.