By popular I'm mostly on about the original Hogan era in WWF, WCW/n.W.o. era & the Attitude era. But feel free to state any others.
I'm generalising but Hulk Hogan missed the Attitude Era, Austin wasn't part of the WCW boom period and Bret Hart played only a small role in the Hogan era and missed the other two almost completely, etc.
I'm sure there have been plenty but one that spings to mind is the Big Boss Man. Arrived in WWE as Hogan fodder in the late 80's, was part of the n.W.o. and was involved in WCW during their most popular period before going to WWE again and playing a role in the most popular modern era.
I'm generalising but Hulk Hogan missed the Attitude Era, Austin wasn't part of the WCW boom period and Bret Hart played only a small role in the Hogan era and missed the other two almost completely, etc.
I'm sure there have been plenty but one that spings to mind is the Big Boss Man. Arrived in WWE as Hogan fodder in the late 80's, was part of the n.W.o. and was involved in WCW during their most popular period before going to WWE again and playing a role in the most popular modern era.