Thank you! Very good information to process.

I think you're correct about the origin of my OP premise based on trivia I partially remembered from a documentary I saw over a decade ago.

https://en.wikipedia.org/wiki/Priority_of_the_Gospel_of_Marcion
https://en.wikipedia.org/wiki/Gospel_of_Marcion
https://en.wikipedia.org/wiki/Marcion_of_Sinope
https://en.wikipedia.org/wiki/Marcionism

Grasping for familiar names, Paul/Saul and Constantine were my wild guesses that I didn't expect to be correct, but thought might help root the concept. Wish I could recall the documentary. I know it's a simplification, but I'm certain they mentioned an influencer who sent it out to the "four corners of the Mediterranean", a metaphorical phrase that stuck with me. I'm pretty sure he was long dead by the time the revised gospels were aggregated. Or perhaps all of it was an over-simplification for the audience to easily digest.