I'm sure there are lots more, I'm just keeping the list shorter. Maggin did back in the 1970s. I just always loved the character. It wasn't until many years later that he and I talked about the similarities in mine and his stories and he has apologized so many times in person and in print that it's embarrassing. Superman has been around for over sixty years now.
All comics lead from that single point of creation.
Superman has existed in a variety of incarnations in print media, radio serials, television and on the silver screen. I'm curious as to your viewpoint on this as a screenwriter. I try and utiliize all the versions because they all have a certain magic, even the awful ones. What Paul Dini and Bruce Timm are doing on the animated show is right on target, brilliant stuff. Fliesher cartoons are wonderful.