My opinion: yeah ISTP can look the most NT-like and I relate to that... I don't know from experience if ISFP can look NF-like just as much but by definition yes it would. As the Ni is in the same place. Talking generally of course, not of individual cases.
I'd like to add a few comments especially on what I think Ti is like or not like, compared to Ni etc.
I'd say ISFPs tend to be. ISTPs can have really brilliant flashes of intuitive insight but I think the more linear nature of Ti somewhat restricts the operation of non-linear Ni, whereas F is more mutable.
I don't experience Ti as linear logic. Though I bet it's not as non-linear as Ni, alright
I do not think they are the most habitually intuition engaging. That award would maybe go to ESFP or some other SF. I do think they and ESTP's are the most efficient of the entire spectrum at utilizing intuition, between mental and physical tasks.
Can you elaborate on why and how you think ESTP's are that efficient at utilizing intuition in either mental or physical tasks? Not questioning, I'm just curious.
Keep in mind, ISTP's are famous for having the Ti/Ni loop, which as i have observed with myself brings them both into an even plane, probably why we often mistype as INTJ's.
Heh I sometimes can't tell where Ti ends and where Ni begins because the Ti stuff often just feels like I'm perceiving whatever inside my mind. It's an abstract intangible nonverbal thing but I sometimes even see something in a visual way and that can be symbolic. However all that perception is limited to logical constructs so I know it's still Ti. And of course, conclusions are made from the perceptions => Ti judging
Considering these distinctions, I don't see TiNi loop bringing Ni to an even plane with Ti. Most of the access to Ni is controlled through Ti. That is, I tend to only have insights in topics that I already made sense of.
Sure I have experienced more direct Ni too but that's rare. And I think the Ti is usually still there because it's still stuff that I've thought about with Ti before. That is, there was already some logical analysis based on my observation. Just maybe in these cases it's been a while since I last thought about the topic I got the insight about and so it's not noticeable to me that it's actually still Ti-related Ni.
The only really "Ti-less" Ni that I've seen about myself is linked to Fe stuff. Or some generic F stuff, anyway.. some of it's negative, like negative estimates about people's attitudes; but not all of the stuff is negative.
So... How about you? Is your Ni stronger than this? Less controlled by Ti when in TiNi loop?
ISTP's like ISFP's also possess tertiary Ni, however, they would not be the most Ni of the two ISP's because their Ti seems to rely on deductive reasoning, which I see as opposite/ greatly differing from Ni's inductive reasoning(at least this is how I somewhat think of Ni, but I could be wrong as I've also seen Te referred to as inductive reasoning), as well as being too much a straight line of reasoning, which isn't something I see intuition in either form as being.
I would like to say, my Ti isn't deductive much. I'm very inductive naturally. I only grudgingly use deduction. I see its use though. Now my problem, I never understand those people who try to link functions to other cognitive traits like this about induction vs deduction. It's useless trying to so strongly correlate functions with that. Well you can do that but it's no longer going to be the same concept as in the original system and that has consequences.
Also, I don't have a straight line of reasoning by default. I can do that, if I need to communicate my thoughts in that way. But even when I wrote papers at university where I did heavily utilize such way of putting my thoughts, the whole written paper was still seen as very holistic by me. (As much as I could make it with the limited resources in fleshing out an idea and exploring it in real experiments.) Overall, straight line of reasoning is too one-dimensional seriously. I have seen that associated with Te but I'm again not sure if it's such a good idea to link the two. Nothing in the core concept of either Ti or Te makes it necessary.
Both have tertiary Ni, but dominant Fi works better (more readily, less conflictedly) with Ni than does dominant Ti.
I would say this depends on the area of where the ISP tries to use Ni.
+1
Going to have to say ISFPs take home the gold here, though. Ti can be literal as a motherfucker.
That one's true about being literal. Good point
Though of course, it's just a good example of how traits of the mbti dichotomies aren't so neatly consistently linked with the dichotomies or the functions :/ E.g. here, being literal is an S trait supposedly but can be T trait too.
imo, it's a tie between ISFP and ISTP. ISTPs are more intellectual, but ISFPs are more likely to trust their intuition
I'm saying the same to you as to Zarathustra, it depends on the area of life, whether I trust intuition or not. Tbh when I wouldn't trust intuition, it - generation of insights - doesn't even get active so it's all cool that way as I know it wouldn't be working anyway. (Ti kicking Ni out pretty effectively I guess

)
I know an ISFP who is similar in the respect that he views himself as intuitive; part of me wanted to type him as INFJ, but only in light of the thoughts he shares on the internet. In real life, his attitude seems more devil-may-care. I think part of why he seems so intuitive, according to the colloquial sense of the word, is just the fact that his intuitions are so deeply housed in who he is. They're simple, discrete, and they serve his own purposes; when I visualize how his mind works, it appears compact, yet efficient. He has a level of certainty that sharply contrasts with the typical INXX tendency to over-analyze. From this perspective, it seems like iNtuitives ironically impede themselves with their dominant/auxiliary functions.
As ISTP, I've actually been told I overanalyze. Because I try to explain my thoughts well enough (precision?). I don't actually overanalyze inside my own mind if it means overthinking things, it's usually analysis automatically done in the fraction of a second. Nonverbally of course. Putting it into words is much slower and more tedious. You actually mention it's a tedious process about trying to be precise about explanations hahaha. Though it does apply to gaining an understanding too, not just explaining it. That, gaining a precise understanding, can be a tedious process too but it's alright. That's also what can be seen as overanalyzing, I guess.
Ti bears qualities that abstract information, but its level of tedious precision adds weight to the argument that ISTPs are less "intuitive", overall. Meanwhile, Fi (while exercising its own level of precision) seems less honed in on the objective world (objectivity being a strength of sensing). So, if we're to assume that each function, while different, holds aspects of equal measure, then Fi starts to look more "intuitive" when compared to Ti.
As for Fi (or Ti) looking more intuitive, I still say this depends on in which area you apply Fi vs Ti.
How astoundingly wise you must be, to think that a sensor can't use intuition. "And since you can't see, i should probably tell you I'm rolling my eyes."
He didn't actually say that. He meant "intuitive" in the sense of having N preference over S preference. The wording was not the best though, yes.
You sound like a rather underdeveloped fellow ISTP i know personally.
Assumptions much? Without using actual data? Intuition?
and not some one line blanket statement, which uses the assumption that a preference (i.e Sensing over Intuition) is absolute and not changeable. Good day.
Actually, by definition, preference is absolute. Preference means more "use" of a function over another function overall. Though, if someone changes type then of course that means that - at least one - preference is changed.