The final 2 stages from Cook-Grueter's model of ego development: the Construct-Aware and Unitive stages. These are basically the highest stages a human can develop to.
Link to Cook-Greuter's Research Paper:
http://www.cook-greuter.com/Cook-Greuter%209%20levels%20paper%20new%201.1'14%2097p%5B1%5D.pdf
Mirror Link, in case the above one breaks:
https://www.actualized.org/downloads/the-9-stages-of-ego-development-cook-greuter.pdf
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