i think we've discussed some of the things you've mentioned on the thread INFJ subtypes, though we've probably haven't solidified a theory on the functions.
i've consistently wondered the same thing after noticing differences in how we all relate with each other and express ourselves.
i think Julia mentioned that there are
INFJs who use a lot of Ni with Fe and Ti as minor supporting roles,
those who exercise Fe strongly to support their Ni, with Ti either not as de
veloped or not as preferred
and others who use their Fe through their Ti function to support their Ni.
OR perhaps these just refer to general stages of development in a person, and therefore are transitory and change with growth. however, i do perceive that some prefer one to the others.
another thing i wanted to mention was, although the Enneagram is another system, perhaps it can help understand how we orient those functions into our lives?
all in all, i think this thread is a great idea Indigo