There is very little evidence in this thread that reincarnation is a real possibility. I'm not saying there isn't any evidence, only that in this thread there isn't much in the way of evidence.
I would tackle the problem a bit differently. I would start with, is there any evidence of out-of-body experiences? Because the idea of reincarnation is dependent on whether or not it's possible that one's consciousness can exist apart from our present body. If it can exist apart from our bodies, then we have evidence that consciousness is more than brain activity. Thus, moving into other bodies (reincarnation) would be a real possibility, since we can move in and out of our present body.
Furthermore, I would still contend that even if we don't understand the mechanisms involved, we have a considerable amount of testimonial evidence that OBEs do indeed happen. It is also true that since the claim is rather fantastic to some, that you need an extraordinary amount of evidence to support the idea that disembodied existence is possible or highly probable. My contention, and I've made this claim in other threads (viz., Does Consciousness Survive the Body), is that there is an enormous amount of testimonial evidence to support the conclusion that consciousness does survive the body.
I often read, "There's no evidence," it's as if testimonial evidence, is not evidence. While it's true that testimonial evidence tends to be weak, it can also be strong under the right circumstances. What makes testimonial evidence strong is exactly what makes an inductive argument strong. What follows is a list of what makes the argument strong.
First, number, how many people are claiming to have had an out-of-body experience? Gallop did a poll years ago, and estimated that about 5% of the population had an NDE. Worldwide that's hundreds of millions of people. Now numbers aren't the be-all-and-end-all of inductive arguments, which is why you have to have more than just numbers.
Next, variety, viz., is it happening across cultures? Are there different age groups involved? Is the experience happening in a variety of circumstances? Has it happened through history? Is it happening to people with differing worldviews? The answer to all of the question is yes, it happens in a wide variety of situations and contexts, even to people who aren't near death.
Third, consistency of the testimony, the consistency of the testimony has been examined by many, and it has been found to be consistent. People are seeing basically the same things. Moreover, the consistency of the testimonial evidence is just as consistent as any testimonial evidence that involves large numbers of people. There have been many academic studies out of the University of Virginia detailing the consistency of the testimonial evidence. Here is a link to one such paper -
https://med.virginia.edu/perceptual-studies/wp-content/uploads/sites/360/2020/11/Nov-2020-NDE-C-CC.pdf
The fourth criteria is truth of the premises. To know if the premises are true we need corroboration of the testimonial evidence, a high degree of consistency, and firsthand testimony. In all or most of these cases, it seems clear that we have all three. We have millions of accounts that can be corroborated by family members, friends, doctors, nurses, and hospice workers. Corroboration is important in establishing
objectivity to what is a very subjective experience. It lends credence to the accounts. One example of corroboration is given in Pam's NDE out of Atlanta, GA, which can be seen on Youtube.
Another aid in establishing the truth of the testimonial evidence are firsthand accounts, as opposed to hearsay. There are literally thousands of firsthand accounts being reported by the International Association of Near Death Studies (IANDS). Moreover, according to polling, there are millions of firsthand accounts of NDEs.
There are other points that can be made about what strengthens an inductive argument, but this is a good starting point.
The testimonial evidence, i.e., the various reports are all over the place, but IANDS is a good place to start.
I don't see how you get more compelling testimonial evidence, it's overwhelming. Do I need to know the mechanism for OBEs in order to know if NDEs are veridical? Do I need to know the mechanism of any experience to know if the experience is real or genuine? Of course not. We have firsthand experiences all the time without knowing the mechanisms involved.
There are a variety of academic papers on the following site dealing with the subjects of this thread.
https://med.virginia.edu/perceptual-studies/category/academic-papers/