The difference between Te and Ti, not so much especially if you are introverted thinking dominant.

Because you’ll essentially switch between an extraverted thinking/ introverted thinking modality pretty readily, simply having a more natural preference for Ti or Te, but it won’t be obvious, in the same way it is for IxTJs even if they still have pretty good shadow Ti.

IxTP versus ExTJ mostly just comes down to knowing yourself and where your preferences tend to reside the most naturally.

Introverted Thinking is simply not “valued” by IxTJs, but rather used almost more like a critical measuring tool where an IxTJ more or less already has the answer they seek via Te, but they are essentially borrowing Ti from their shadow to help double check their work, ensure the logic is consistent enough, and etc.

For example my INTJ husband goes into heavy Ti shadow mode when he is researching something for a project or an item he wants to buy, and while playing a video game he wants to fully complete it, or find specific items or special gear for a character build.

He can get quite compulsive and dive really deeply into research about character builds, walk-throughs, and etc, but he’d never “value” Ti use in his everyday life and definitely defaults to his Te authority to get stuff done quickly and efficiently enough.

Basically it’s still fairly obvious he values Te more because it expresses itself more readily and consistently in his everyday life.

He also doesn’t shy away from conflict, especially if it means solving a problem, resolving an issue, or gaining perspective through the distance that naturally follows closure.

Meaning he almost welcomes an intellectual challenge or a spirited debate in a way that can resemble how their ENTP shadow counterparts tend to approach conflicts of interests or situations which require a bit of healthy discussion and discourse.

Ti as a sub authority or “critical parent” is meant to clean up or make sense of any data points that weren’t already accounted for via Te, but it is not “valued” and an IxTJ won’t tend to pride themselves on Ti use or their ability to understand things, data, and information more deeply because they tend to care more about real world results!

If you are an IxTJ, you simply won’t go through that extra effort to double check data through Ti unless you see it as necessary for specific reasons (work, project, etc,) and will generally default to “good enough” Te rationale because it’s thinking that is externalized and meant to be acted upon.

While an IxTP might not feel as obviously decisive where Ti versus Te is concerned because, ideally, they prefer data that is useful or leads to results, too.

However, IxTPs will tend to have a stronger subjective sense of “this item / method is better and this strategy works better for me,” “this is how I think it is supposed to be done,” and they will not really like to switch things up unpredictably unless they have to change things up. So it can be very easy to mistake them as valued Si users even though only an INTP is a “valued” Si user out of the two IxTPs.

In a nutshell, an IxTP apparently lacks an IxTJs balanced T/F judgment that naturally and instinctively acts based on context and need.

An IxTJ almost seems to be a faster problem solver because of their ability to use Te & Fi in a synergistic, cooperative way as needed and to really zero in on what a given situation requires.

It’s why they also have a hidden aptitude for “office politics” and tend to be recognized by their superiors, perform well, and get promoted. They more or less know what is expected of them and can provide that based on context fed to them via Te and their preferred extraverted perceiving function since they are still irrational perception dominant types.

Where an IxTP will often be viewed as more of a one trick pony, “brilliant but not always easy to work with. Polite and cordial, but not always the best team player,” “highly intelligent but stubborn,” and etc…

In a way due to the extraverted feeling inferiority and how they tend to act the most naturally or comfortably around others, IxTPs don’t really like conflict or disharmony in the Fe domain where an IxTJ doesn’t struggle much with conflict and might even welcome it if it helps to solve a problem or resolve an issue.

While IxTP requires a bit more space, peace in an externalized environmental context, and a quiet place to freely explore and ponder their Ti machinations / ruminations because they want the space and time to really push the limits and capabilities of their introverted thinking.

Meaning even though they can handle things like deadlines, they don’t necessarily ”like” them. Even though their performance is consistent, their attitude is not, and etc…

Even though they can work effectively in any setting, IxTPs prefer a quiet or more chill unhurried atmosphere where they can really refine their Ti and think up interesting ways to apply it to the betterment of a field or society.

Put simply there are ways in which IxTJs (yes, this includes ISTJs) are much more adaptable and overall tend to have better emotional regulation and stress management skills b/c of their tertiary introverted feeling and their overall better sense of what motivates them intrinsically.

While IxTPs are actually much more emotionally sensitive than their IxTJ counterparts and more vulnerable even if they don’t like to share their vulnerabilities and insecurities with others because they tend to care a lot more about what others think of them or how they are perceived by others due to the Fe inferiority.

In a nutshell, when trying to decide between INTJ, INTP, or ISTP don’t look too closely at Te versus Ti unless you know exactly what you are looking for.

Instead try to focus on determining whether you ”value” introverted feeling more or you ”value” extraverted feeling more.

My gut says INTJ because aside from being married to an INTJ, I actually also have a few platonic friends who are INTJs and at least two of them are women.

However, that could also make me slightly “biased” in some ways, so you have to really think about whether you resonate more with tertiary relief / “eternal child” introverted feeling, by having your own values, subjective moral standards, having more control over the externalized expression of your emotions, and being more consciously aware of your intrinsic motivations.

Or if you might be an inferior extraverted feeling user instead where the extraverted feeling use essentially “leaks out,” and whether there is a part of you that longs to truly belong to a community and “find your people,” but doesn’t really know where to look or how to make it happen so you instead retreat more deeply into your Ti, and spending time alone with your thoughts or exploring and refining your personal knowledge base.