Off the top of my head.....and strictly sticking to people who were still alive after I was born.

Jim Aparo

Marshall Rogers

Carmine Infantino

Herbe Trimpe 

Mark Gruenwald

Dave Cockrum 

John Hurt

Rowdy Roddy Piper

Alan Kulwicki

Roger Zelazny

If people alive but in no condition to interact with count, add Bill Mantlo, sadly.

True story: I was at an event where NASCAR drivers were signing autographs, and found out that Alan Kulwicki was signing at a Hooters restaurant (they were his car's sponsor). I considered going, but didn't. He was killed the next day. 

Also passed up the opportunity to meet Roddy Piper at a convention, but that was a few years before he died.

Jack Kirby.

Two I missed:  Russ Manning and Dan Spiegle.

Actress:  Julie Newmar, who, I'm happy to say, is still around, so maybe someday.  Grace Kelly.