Yes. Early immigrants to the Americas had relatively higher amount of neanderthal or Denisovan DNA. Or else there was a population there that migrated very early on. Or else some group of Melanesians or Polynnesiams sailed over.. .phew that solves it 
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I wonder if there is a way to test which one of these 3 possibilities is more likely.
While we are on the topic of Denisovans, this video a year ago has a good discussion as well.
Polynesian migrants, not northern land bridge
I don’t think we could determine exactly yet.
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Is it the case that there’s still never been a Denisovan skeleton found? A few teeth and jaws , maybe a finger bone, bits of craniums only?
It sure is interesting given we have skeletons of much earlier human ancestors.
It helps that those earlier hominines lived on dry East and South African prairies.
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Interesting find. But seems iffy at best given it’s in the ocean and vast amount of travel is possible within it. Not that land travel isnt incredibly possible as well which makes location of bonesa bit hard to take as actual distribution fact alone sometimes.
It’s pretty easy for smaller peices to travel around. Floods, animals, trophies/collection etc. Finding habitation, art, whole bodies, families, tools etc tend to lend more evidence to a species actually existing/travelling through an area. I wonder if such a discovery has been found? Especially in Taiwan.