https://vividness.live/2015/10/12/developing-ethical-social-and-cognitive-competence/
I just found this: an introduction to Robert Kegan's 5-stage model of moral development.
Like all "stage" models it's inherently incomplete and has significant limitations, but is definitely an interesting thing to think about.
Really curious what y'all think.
(Also I am *100%* expecting objections to these developmental characterization of ideology.)