Changing your story and not answering the question. Where were you in the 1960’s and 1970’s? I don’t recall hearing one story on global warming, but there was a great deal of alarmism over global cooling until probably the late 1970’s. When I was in school there was absolutely no mention of global warming but a coming ice age was predicted.
Exxon’s studies were into the climate change effects (not necessarily global warming), and weren’t really initiated until 1978.
The following is pretty much in line with my memory-
“ A review of the climate science literature of the 1965-1979 period is presented and it is shown that there was an overwhelming scientific consensus for climate cooling (typically, 65% for the whole period) but greatly outnumbering the warming papers by more than 5-to-1 during the 1968-1976 period, when there were 85% cooling papers compared with 15% warming.”
https://wattsupwiththat.com/2018/11/19/the-1970s-global-cooling-consensus-was-not-a-myth/