#4 The Rock
Sometime in the not so distant future, Roman Reigns may very well have another Hall of Fame relative to brag about. He and The Rock are also cousins and you would have to imagine The People's Champion will be inducted into the Hall of Fame sometime soon.
Since The Rock is related to Roman Reigns, then that means The Great One is also related to the multitude of Hall of Famers that The Big Dog shares a bloodline with. They're Samoan and wrestlers which apparently means they are almost definitely related.
WWE doesn't make a habit of inducting Superstars who are still active into their Hall of Fame, and whether The Rock fits that description or not is up for debate. When he battled Cena a few years ago, he wound up injuring himself so it's possible that Rocky may never wrestle again.