I notice that even within this community, there is no commonly accepted personality theory.
People here disagree and each person seems to have very different theories in mind. They disagree about what exactly the cognitive functions mean, how we use them, and how much weight each one carries in the cognitive stack.
As a result, there are many different views on what the 16 types are and what their characteristics are. This makes discussions difficult and often creates pointless disagreements and confusion.
There should be a theory that is commonly defined and accepted by everyone. Those who disagree with it should make that clear so that it is obvious what each person means.
It would also be a good idea to create different communities, each one expressing its own ideas about personality types. That would be much clearer and more useful than seeing all these conflicting ideas as part of what is supposedly the same theory