I'll say '66 then '62 then '96 in terms of domination at the time.
I think we had 3 consecutive NFL champs in the early '30s also if they had gone back that far. It's kinda an apples to oranges to water melons comparison if you go back to different eras, even between the early Super Bowl era and now.
After reading the article, I'm convinced that those '62 Packers deserve the top spot - a nice tribute to greatness.