I think the popular knowledge was based on the bering straight ice age migration story, which has been mostly debunked. how the americas were peoples remains an open question
https://en.m.wikipedia.org/wiki/Peopling_of_the_Americas
>The peopling of the Americas began when Paleolithic hunter-gatherers (Paleo-Indians) entered North America from the North Asian Mammoth steppe via the Beringia land bridge, which had formed between northeastern Siberia and western Alaska due to the lowering of sea level during the Last Glacial Maximum (26,000 to 19,000 years ago).
That is what is common knowledge afaik. What has been debunked?
Did you mean "peopled"?