There has been a crap ton of DNA studies.
But no, they did not find "Sino human beings." There's not even DNA to indicate the Chinese ever visited here, as had been proposed.
As for Polynesians, not DNA, but fishhooks and whatnot of similar design, as well as some similar words. That would be on the West Coast. Oh, and suggested to be the origins of chickens in South America, predating their introduction by the Spanish.
What you're saying is pulled from the air, flotsam of other tidbits you may have heard. Regardless, due to something of an immense influx of foreigners since 1492, Native Americans have been rather genetically diluted to the point that a significant number are indistinguishable from Caucasions, or Afro-Americans as well. So such studies are unlikely to yeild anything, as witnessed with the the Cherokees - also another rumored to be this grand lost tribe from Israel, or maybe Viking, or Welsh, or Irish, yadda yadda.