Thank you for providing such a rich and detailed overview of this topic. It is always interesting to see the emergence of a new version of an age-old phenomenon wherein individuals can seemingly identify themselves within an easy-to-grasp structure. Whether it be horoscopes, fortune telling, Tarot cards, psychic readings, or Myers-Briggs, the underlying dynamic is always the same and always effective for the human brain seeks simple patterns by means of which to frame reality. At least this latest fad seems less harmful than the various myths that emerged from the Yahweh cult, as those were all stunted and psychologically damaging fairytales. Hopefully no one will have to be tortured or stoned or burned because of temporary belief in Enneagrams.