Trying to define personhood using any sort of scientific analysis is a dangerous road that was/is used to justify horrific acts of racism, violence, and subjugation, including Social Darwinism in the early 1900s, and the eugenics movement that followed.

I can think of no objective testable definition of person which is both meaningful (i.e. non-trivial) and not horrific for corner cases or those that would be excluded.

I know this wasn't your intention because you're using it to grant personhood to more entities but the implications aren't great regardless.