First, I would say that any type is capable of introspection, so let’s get that out of the way. Addressing more specifically some of your concerns, the word “object” seems to be the problem here. Quoting the metabolism article on energetics, we see that “Object = An object refers to any dataset that can be entertained conceptually as a standalone entity”, and this seems to me to be precisely what is going on: you have made your own qualities and characteristics an object of analysis, and you spend time exploring such qualities and forming an axiomatic understanding and map of them – I won’t get into the hierarchy question, but this is consistent with being a Pe-lead. Or, if you want to flip your argument on its head:

Theorem: Every person is a dominant introverted perceiver

Proof: Any thought a person has happens inside the subject (I), and involves the perception of such mental states (P).  QED