INFP and ENFP.I think having that Ne and Fi combination would make a person extremely self-aware and they are also able to apply this self-awareness onto the people around them and pinpoint their feelings very accurately.
I have a friend whom I believe is xNFP. She has this ability to help me discover emotions in me that I didn't even realize it in myself.
For example, I used to like this guy in my high school, and I haven't seen him for 2 years. Then one day, she brought up to me about him, asking me whether I still like him.
And I realized that I felt upset when she brought up to me about him. And I was pretty surprised by those upset feelings that I was feeling when she brought up about him.
I didn't even know that all these while, I still have some feelings for him, until she brought up to me about him.
Although I am self-aware when it comes to my strengths and my weaknesses, but I am not very aware of my own emotions. I usually only realize my emotions when people brought up to me about how I am feeling. If they didn't say anything about my feelings, I wouldn't even be aware of how I am feeling.
And it's not just my emotions, I often have difficulty identifying which is my needs and which is other people's needs. For example, I want a career that I am passionate about, but my family wants me to choose a career that is more financially stable. I feel pulled in two directions, I don't know what I should do. Whenever I make a career-related decision, I don't know whether I made this decision because of myself, or whether I made this decision because of my family.
I think strong Fi types such as xNFPs and xSFPs would be more self-aware in those aspects. They know what they want, and they just follow their heart.