I really enjoy the "Personality Pages" of the link you gave GinnaTonia...
The Personality Type Portraits
For each one you click on that link - at the bottom, you can also find
Careers for your Temperament,
Relationships, Personal and
Growth links...
I find that I have a lot of the qualities of the ISTJ and ISTP, but definitely am not precisely either one.
FOr instance the "sense of space and function" is either well hidden or I don't have much of it. Not my thing.
I'm also not much of a "by the book" kind of person.
From the ISTP, I have "a compelling drive to understand the way things work. They're good at logical analysis, and like to use it on practical concerns. They typically have strong powers of reasoning, although they're not interested in theories or concepts unless they can see a practical application. They like to take things apart and see the way they work."
Fits me totally. And this too, from ISTP
"ISTPs avoid making judgments based on personal values - they feel that judgments and decisions should be made impartially, based on the fact. They are not naturally tuned in to how they are affecting others. They do not pay attention to their own feelings, and even distrust them and try to ignore them, because they have difficulty distinguishing between emotional reactions and value judgments. This may be a problem area for many ISTPs."
Emotions cause bad judgments and decisions. I work extremely hard at trying to keep my emotions and intellect separate.
Interesting stuff.