Have DNA analysis of their origins been able to be done?
Yep.
Verification of the Cloud Peoples racial makeup came two years ago, when archaeologists found an underground burial vault inside a cave with five mummies, two intact with skin and hair.
Your question is right on. But I bet it is not going to be answered because it is a bunch of hogwash.
Its like the many blond San Blas Indians here in Panama. No one bothered/bothers to come here and look into their rapidly shifty quivering blue eyes aside from other physical features. They would find they are albinos. The San Blas Indians have lived on islands off the coast of Panama for a zillion years and do not like intruders.
These albinos are caused by interbreeding and nothing else no outside Euro influence.
It's no longer about finds...they are everywhere...it's about controversial guesses so that money keeps on coming!!
Go here...and I get no pleasure sending you this because it is a tad sad for me:
http://www.flickr.com/photos/21147073@N06/4432246546/