Psychosophy is about your attitude towards the 4 categories (logic, emotion, will/volition, physics) and this is the basic structural set up. You can be any sociotype with any psychosophy type.
1 Strong, egoistic function. This is the function the person is inclined to identify with. Person feels the most confident and adept in this function.
2 Strong but flexible function, directed towards outward things. Use function as a tool to achieve aims, support lead function. Person learns and gets better understanding of this function through discussion with other people.
3 Weak function that wants to look strong so this is an area of pain. There can be deep understanding of the function but not much nuance. Area of a lot of ambition, but sometimes it doesn't have the right support or tools to become self-actualize properly.
4 Weak but calm function. Area that is underestimated and not used in most cases. However when this area is utilized, it gives a feeling of relief and satisfaction.