The point of view used in "Nightmares and Dreamscapes" by Stephen King varies from story to story.
The stories that use third person omniscient are ones that have a broad scope or complicated range of emotions between characters. By using third person omniscient, King is able to describe bizarre happenings that may not be explained through the limited knowledge and experience of the character. The author can also cover the history involved in a particular scenario and compare and contrast points of view and belief.