Interesting and at my advanced age I was aware of much of what you posted but not all. Up until recently I still refered to armored cable as Greenfield and was corrected more times than I can remember but Greenfield is like Kleenex, it is a branding name.
I started building in 1969 and was right there to see NM take over, slowly at first and then BAM, only saw armored on commercial.
Good to visit the past now and then.