[Santtu]

We're familiar with the keirseyan NT-NF-SP-SJ division, where Keirsey has the N and S handled differently. Then there's regular divisions of the 16 types into 4 groups by 2 of their dichotomies, with any of these templates:

xx--
x-x-
x--x
-xx-
-x-x
--xx

For example, people speak of EP and say they are a certain kind of people. Grouping the 16 types by their E/I and P/J we would get EP, EJ, IP, IJ. Some people think of any of the "IJ" as one of the kind, and IP something completely other, never mind the T/F and the S/N.

So, which of these (6) possible groupings is the one you think of the most significant? Please tell us why. I'll start.