Owen. When people bring up best ic champions of all time they bring up Perfect, Razor, Bret, Jericho. Owen won the belt twice, and was on his way for victory number 3 until tragedy struck. Multiple time tag champ with Bulldog, Yoko and Jarrett, European champion the guy won every belt except the big one. Why he isnt in the hall of fame yet with Bulldog I don't know. Bulldogs another forgotten champion.
You won't see many people make it to the hof unless they were a heavyweight champion or a long time tag team. Owen didn't stay with anyone long enough to go in as a tag team. I'm not saying he's not worthy. Heck I still can't see why Junk Yard Dog got it. He was never a heavyweight champion and he was okay but mostly a gimmick. I hope he gets in one day to but there are better ones such as Macho Man, Steamboat, and LOD before him.
As far as my pick I'm going with two old school. Arn Anderson I know he wasn't a heavyweight champion but he could go in with Tully, or as with Owen on his singles championships. The 2nd one is Terry Funk. Everyone thinks hardcore Terry but please look at his early stuff from the 70's the man was awesome.