otwo
There is a doctor who had so many people having these NDE that he wrote a book.This is probably the closest thing that I know of that would be documented proof.
Proof of Heaven: A Neurosurgeon's Journey into the Afterlife
There is also the Near Death Experiences Research Foundation that has many documented cases.
Food for thought. Also worth mentioning that a number of Muslim NDEs report seeing Jesus in their vision.
Just saying that it is interesting reading.