I wouldn't have considered myself for this group, but I suppose technically I fit into the 3rd group, having dropped out after 9th grade, gotten a GED and worked my way through community college then university.

I've gone on to have what I consider to be a very successful career and high life satisfaction. And pretty much all of my lifelong friends came from outside school settings.

I'm privileged to have gotten to take this path.

Just another self-reported data point.