There are definitely some accounts that I would consider hallucinatory due to wildly atypical content.
On the other hand, others are simply irrefutable. Examples include:
* A technically dead patient in ER overhearing conversations in another room, verified by medical professionals (this has happened countless times)
* A dead patient going to a distant place which they later visit in real life and can navigate with ease
* Blind people have full sight during NDEs
* Unexplainable miraculous healings, eg. pervasive cancer clearing up within weeks of an NDE
* Other stuff: accurate predictions about the future, newfound abilities, etc. I'm not going to go into it all.
Regarding Jesus, NDE experiences tend to be tailored to the individual. Equivalent accounts of other cultures would have their own appropriate imagery. My understanding is that this is done to make the transition comfortable. In this context, 'God' is quite universally depicted as a bright white light with a powerful presence; this is not specific to any religion hence its universality, including
atheist NDEs.