“the bottom line is that originally the skin tone of Yidden was darker and not pale white as someone here quoted the Talmud.”
You keep repeating this but it isn’t correct. The Yidden’s skin color was not darker originally.
“sephardi is the original nusach of yisrael”
Not accurate.
“the origins of yidden are of sephardi/mizrachi countries.”
Not true either. Our origins are not from Spain, Portugal, Morocco, Persia, Yemen or Libya.
“So I guess the real question is how did ashkenaz nusach come about and was the sephardi mizrachi nusach really the original and does it trace back to those times?”
The Sephardi Nusach or havara is no more correct than the Ashkenazi Nusach or havara.