Golding takes advantage of third person omniscient POV in Lord of the Flies. This type of narrator knows the inner working thoughts and feelings of all the characters in the story. Making it as simple as possible to understand their motives and desires. Not knowing who exactly is narrating the novel doesn’t matter at all because they are not directly involved in any of the action taking place. An example of this distant narration from the story:
‘Ralph disentangled himself cautiously and stole away through the branches. In a few seconds the fat boy’s grunts were behind him and he was hurrying toward the screen that still lay between him and the lagoon.’
The narrator isn’t passing judgement on ralph but instead merely explaining the details of the events occurring. He does not alter what you think whatsoever.