You are trying to use correspondence to assert the existence of 8 other versions?
No, in the meta-sense of comparing all versions it breaks down.
If you want, what happens in practice, it is this. These different versions of human behavior all work, but all only in a limited sense each. None of them are universal, absolute and all that, none are the Truth.
Now you want to compare, right? But then it turns out that the standard(truth) you use it also limited, so now you hunt for a meta-meta truth that can settle which one is the correct one. But that doesn't work, because the meat-meta truth is also limited and then you use a meta-meta-meta truth, but it never stops. It is an infinite process of more meta on top of meta.
We are in effect playing Agrippa's Trilemma.
Now the short answer is that existence as a concept is not true as per correspondence theory of truth.
If you want it with natural science as how brains work, here it is. There is no central center in the brain for the Truth. There are different centers for different behaviors, but there is no one behavior(Truth) that controls all other.
All kind of truth are in effect different cognitive behaviors and they all work, but in a limited sense.
I use a relative model, because I will simply shift between different versions of truth according to which one appears to work best(subjective and itself relative) in a given context. I am relativist and use truth in a relativistic sense. In effect I am not one part of my brain, but different parts and combinations depending on what is at play.
Regards
Mikkel