Ten years studying personality theory, with an emphasis on the Enneagram and instinctual variants. I've paid at least cursory attention to a half dozen to a dozen or so other systems. And I made an original synthesis between the the instinctual variants and Guilford's structure of intellect.

I'm just curious exactly where you're getting this from. Family dynamics, instincts? I'm curious to read more detail.

JCFs are a good candidate for sure then. I'd dive into Fe and Fi for starters. Two feeling functions in different, opposite attitudinal roles (in, out; subject, object).

And the Jungian principle of opposites doing war; causing war. Transcending opposites, creating the third point.

That doesn't narrow it down much I know, but this was a long time ago for me and I kind of got sick of everybody's personal One True Model. To me they're all just toys or toy building blocks for telling stories, in a very important way.

(BTW to clarify, a lot of what I write here is also me modeling by internally referencing unlabeled systems or constellations of models for their derived effect, not just me referencing this or that model. So it would send the wrong message to send you some kind of chapter and verse anyway, and if I could do that it might even be ten models per word, depending)

When you related that you made an original synthesis you almost activated my thread-ejection seat; it so happens that I overdosed on this kind of discourse years ago due to my own enthusiasm for progress of such an amazing sort. :-) It's a fun domain. Good luck to you.

:D