Yesterday I had lunch with two older women ages 70 and 80. One was an assertive ESFJ and the other an INFJ. It was an interesting perspective to see two fundamentally different manifestations of Fe. I've been thinking more and more that the abstract concept of externalized value judgments and externalized subjective impressions of reality that are Fe can be applied into more than one type of system. I suspect there are multiple, fundamentally different versions of each function.
There is a type of Fe we correlate with the 'fake politician'. The person who knows exactly what to say to win favor regardless of the inner feelings about whomever they are speaking with is demonstrating some type of Fe. However, I don't think that everyone categorized as Fe has this capacity. It is a specific manifestation of that abstract concept.
There is also a maternal type of Fe that is genuinely invested in those they interact with, but takes on a guiding role to keep people behaving within the accepted norms. It is authentic and not fake at all like the politician, but it is focused on the assumption that we are all supposed to behave this way or that. It can be either dominant like someone taking on role of mother/father or as a nervously concerned friend.
There is also a type of Fe that is like a puppy dog that is very externally influenced, completely authentic, but not as systematic and planning as the above mentioned types. It can change with the external environment, but is the exact opposite of 'fake'.
The type I see in various INFJs is a little different still. It has a more abstract nature and is something like the example of the dog, but imagine it to be a ghost observing all the people and systems feelings all the ups and downs at once from a distance.
I suspect Fi, Ti, and Te and the perceiving functions may have the capacity to have fundamentally different versions of each. It can't be one thing because there is too much contrast in behavior.
That's interesting. I'd say I have a combination of all three depending on the situation, although I exude mainly the maternal type cause of my mentality at times, and it's probably cause of my introverted sensing. Se I would say could contribute the most to the puppy dog side, Si to maternal, Ni to the fake politician or ghost thing. Of course every single function that a person has contributes to how Fe intertwines with their personality but I would assume the dominant and auxiliary positions.