Who are the Gangers that are still alive now? All I can think of off hand is Robert Blake.
As of today, Sid "Woim" Kibrick, Mildred Kornman, and a number of bit players/one-off kids, such as Georgie Jean LaRue, Billy Minderhout, Rex Downing, Valerie Lee, Betsy Gay, Darryl Hickman, Dickie Hall, Clyde Willson... among others. Donnie Smith sometimes makes the list, but I prefer to put him in the 'unconfirmed' category.
Won't be long and they will all be gone. Time is not our friend but we all must pass. That is the tale of life. We come into this world and we make but a footprint in the sand that is eventually washed away by the surf.