Then this ideal would have to focus on all religions and not just the more common western world religions.
I don't believe that the survival hypothesis has anything to do with religion.
The page you posted shows that there are numerous similarities and 90 percent of those on your list explain the same visions and can thus be concluded as a near death experience based on past events or studies.
You could conclude that, but you would have no evidence to support that hypothesis and link it to what was actually observed; especially when you consider the facts of veridical perception, scientific discoveries resulting from NDE, etc.
Now the tricky part is knowing what to experience, which is dictated heavily by your culture and background. Christians, Hindu, Buddhist, Islamic, and Vedic near death experiences are going to be different as they each have their own pre-defined belief system.
Everyone's experience is different. Again, religion has nothing to do with this, even atheists have these experiences and are changed.
So you cannot prove near death experience to be true unless you can control a study that produces equal results among people who fall within the same religion or pre-defined belief system. This goes deeper than the most modern religions.
The experience stands on its own because it includes veridical perception when the brain was non-functional, so it shows that some of the personality survives death some of the time; religion has nothing to do with it.