I personally favor subtypes, because you can have all the positions of information metabolism aligned in a way, have all the matching Renin dichotomy and cognitive style, and still be by others, perceived in different fashion.
Utilizing my own self to be an exemplar, it is extremely common others at a first initial glance (online, mostly forums, and occasionally in voice chat) type me as an Fe base. I mostly get typed EIE-Ni by others who do not well know me, and IEE-Ne is another popular choice. My Fe is appearing as fourth dimensional to others in a strong fashion that is subconscious.
This can explain through me being the IEI2FE, the most extroverted type of IEI:
My introversion becomes apparent when meeting me in person:
I definitely am not in the ignorance of Fi, nor am I a one dimensional Ti. However, with this subtype in mind, my Fe (and Se) have an extra "oomph" to it (them). Then, I am image triad; the enneagram type four. These two things often make others type me as EIE, IEE, or occasionally, ESE (until others see my Si is completely ignored).