I feel like examples that prove it using some standard definitions are a prerequisite to that conversation.
Without standard definitions such as selection method/criterium and controlling for variables such as external factors your basically asking me to refute apples with oranges.





I still think you need to present examples that fit your definitions first. Assuming we’re only talking about selectivity here. Also you’ve kind of raised the bar on yourself by stipulating democracy, egalitarianism, etc.
IMO if you control for selectivity you will find that it’s statistically insignificant and that the success of those examples was due to other factors not how selective they are.
Like the closest thing I would agree exists is mennonites/etc but you don’t count patriachial and religious.