#3 Goldberg
Goldberg was absent from the WWE for 12 years before making his return in October 2016 to feud with "The Beast" Brock Lesnar. During his most recent run, he defeated Kevin Owens at Fastlane to win the Universal championship. He dropped the title to Brock Lesnar at Wrestlemania 33 in a match that pundits claimed was better than their previous encounter at Wrestlemania 20.
It is worth noting that Goldberg is the only person to win the WCW World Heavyweight Championship, WWE's World Heavyweight Championship, and the WWE Universal Championship. He has been dominant in his career and is sure of a future hall of fame induction.
Wrestling analysts do not expect Goldberg to return as a full-time performer. His most recent run was a successful one following his title win and remarkable feud with Brock Lesnar. He also achieved his goal of performing in front of his wife and son and went on to have a good match with Lesnar at Wrestlemania to erase the memory of their lacklustre performance at Wrestlemania 20. However, a one-off appearance at the Royal Rumble is highly likely. The WWE fans would be elated to see Goldberg once again. A number of spears inside the ring would be a moment no one would want to miss.