Hello.
The first two people who were writing and talking about the Supermind were Sri Aurobindo and Mother Mirra Alfassa. But their description of the Supermind is different. For them the Supermind was the plane of consciousness and existence (and the realization of it) way beyond the “ordinary” Selfrealization and the Mind plane. Maybe you should read Sri Aurobindo’s book “The Life Divine” for a detailed description of Supermind.
So i would say Sri Aurobindo and the Mother were “Supermind individuals”…
Welcome to this forum!
I believe you will find this paper interesting as it quotes and summarizes the experiences and characteristics of each stages from Red all the way up to the later postconventional Clear Light/Supermind stage!
Thanks, I was always intimidated by the size of Aurobindos books, so I never got around to reading them. Sure seems like something I might want to change some time soon