Apologies. I thought you were just another Skeptic here to attack. It seems like it's all they want to do these days.
My short opinion is NDEs are scientifically well established psychological phenomena, that have been corroborated with more recent shared death studies, and also other older reports of death bed visions. The veridical observations reported in a number of NDE accounts reinforces what parapsychological research has established now for the last 100 years, i.e. certain psychological events can occur with consciousness indicating non-local awareness, and enhanced capabilities - which are still little known in science.
There have been numerous theories proposed by materialist skeptics regarding NDEs, of which often the many different theories proposed logically conflict with each other, and even the materialists disagree on the validity of one theory over another. In addition, none of the materialist theories have stood up under the scrutiny of scientists who have spent decades research and publishing papers on NDEs. Currently, the best explanatory hypothesis has been the most obvious: there can be some kind of separation of consciousness from the physical body when near death, and very heightened awareness and engagement of well known paranormal phenomena. The kind of experiences reported are widely variant upon a few core elements such as separation from the body and observation, feelings of peace and love, great light that does not blind, increased awareness and energy, possible meeting of dead friends or relatives, and/or a decision point to return - often against the will of the person experiencing the NDE who is upset having to return to the body. In addition, having the NDE usually has a long lasting impact on the individual years afterward. Most NDE'rs report being absolutely convinced their experience was real and was not a dream.
My own opinion - well I think it is very likely consciousness does separate at physical death. That the physical reality we experience here is not the only reality. I believe consciousness is probably a fundamental component of reality, and it is not the product of the brain. Consciousness uses the brain much like a broadcast uses a radio, or a human uses a space suit to go into space, for much the same reasons. Beyond this opinion: I really don't know what if anything is beyond the separation of consciousness. Almost 80% of NDE reports indicate overwhelming feelings of love - actually indescribable love. So, I remain hopeful. I don't think NDEs prove there is a "God" or some kind of higher being. But I do believe enough research has now been conducted with NDEs that it is irrational and unreasonable to label the research as "woo" or "pseudo-science" like many materialists do. The Dawkin's class of materialists have become quite a group of dogmatists, and are now just as much religious acolytes of their belief in materialism than any bishops of religion were in christianity. They have abandoned rationality and even science in their worship of materialism.
My Best,
Bertha