One thing this reminds me a lot of is Enneagram.  Agreeable (Adaptive, Seelie) seems likely to have enneagram 9 for their gut fix.  Disagreeable (Directive, Unseelie) more likely enneagram 8 or 1 for their gut fix.  This even relates to the emotional boundaries point: 9’s have softer, more permeable boundaries and having a harder time saying no, whereas 1’s and 8’s have firm instinctual boundaries.