I think that at this point... It's just an overanalyzation. MBTI is quite a simple dichotomy theory, it uses the functions to explain the type on a deeper level, but in lot of cases, the functions are incorrect and do not fit the type. An ideal INFJ would have developed Ni and Fe, but people are not ideal. I believe that people in general use different functions than the MBTI suggests because it works with the idea that everyone is a healthy, psychologically stable individual, who fits the norm in every way possible. But people are not healthy, people are not stable and people don't fit all the norms. Jungian Cognitive functions are just one big fail in the hands of the dichotomy theory. Anyone who has studied the theory in real depth acknowledges the fact. The functions were not developed to work within the MBTI system and the MBTI system doesn't leave enough space to actually use the functions efficiently.
People who lack the depth claim that they're ISFJs who use Si+Fi or ENTJ who use Te+Ni, but it can't be that simple. Imagine that there are millions of ENTJs in the world and it logically must be over than half of them who don't fit into the function stereotype. People are too complex and unique to be put in such a small box.
You either accept your type and acknowledge the fact that it doesn't have to be 100% you, because you're unique one of a kind individual who cannot be understood by extremely simple concept, or continue to search for the type that doesn't exist within the MBTI.