In reality there are as many personality types as there are people on this planet, over 6 billion.
This is one of those articles where you begin writing something and end up writing about something completely different. I was going to write about children and black and white thinking but ended up writing about a recent sessions I did with two children and their mother.
If the child never resolves its state of primary narcissism then it will never adopt one of these five positions and remains as I+U? or I-U?, which is typical of the narcissistic, borderline and some anti social personalities.