I don't recall there being other groups, but I did find this:

The idea [for the novel] came about after Golding read what he deemed to be an unrealistic depiction of stranded children in youth novels like The Coral Island: a Tale of the Pacific Ocean (1857) by R. M. Ballantyne, and asked his wife, Ann, if it would "be a good idea if I wrote a book about children on an island, children who behave in the way children really would behave?"

Sounds like 100% human nature brainworms, but maybe I'm not giving him enough credit. Chuds sure as fuck have appropriated it though