I haven't heard if they've done enough studies to add the Hakka (another non-Han Chinese population ~ they have the Three Kings in their tradition, one of whom rides a reindeer).
The Sakha and the Hakka may well have a relationship of sorts since both wandered about in the same grazing lands and mountain passes as all the other Turcic speaking people way back when.
The Yakuts/Sakha were identified a few years back by Russian archaeologists as being the "residual" population that had earlier ruled India ~ or much of it ~ at least in their newly translated ancient histories that seemed to be the case.
They are identified in the Mahabarat BTW. A way to identify these guys is that among the Chinese ethnotypes they are the ones whose women have mammaries suitable for modeling some of those Indian female statues!
DNA studies done earlier had tied the Yakuts/Sakha in to a substantial part of the modern Japanese population. Recall they were invaded in the 6th century from the Mainland. The new Imperial line arrived on horseback and took over the Yayoi settlements and began warring with the Emeshi to the North. After several hundred years they conquered the whole place.
That's all well known history. Where the royal family and the Daimyo families came from who invaded in the 6th century had never been known.
There's still a problem in deciphering the Japanese list of kings because some of the early, supposedly mythical kings, may well have been warlords in Northern China and Siberia, and there may be records of them.
I think I've covered most of that before except the X-factor.
Now, the rest of it ~ there's a Lake Inari in Finland. That's where the Inari Sa'ami live. The remaining Skolt in Finland live in the Inari area, and this overlaps the Northern Sa'ami zones.
These folks LOOK DIFFERENT. I finally found some photos of Inari Sa'ami and these seem to be the folks friends have described as having the "most Asiatic" eyes of any of the Sa'ami they've ever seen.
Inari is an expression found in many Eastern Turcic languages meaning something like "spirits of the forest" or "gods", or when you get to Japanese, they know they term was brought to Japan in the 500s. The new comers had something like 1200 "kami" or gods, in their Pantheon, but they were also pushing Zen Buddhism ~ and although most folks would usually think Shinto has its origins among the original population there (the Emeshi and the Jomon) most of it came in with the 6th century invaders.
So, that seems about right to me. An East Asian tribe (with its own N/S chunk of the Silk Road) left India (got booted out) about 200 AD, went North for more permanent quarters in Siberia, then about 535 or thereabouts got driven out by the weather anomaly that created the Dark Ages, lost their knowledge of how to read and write, yet ended up in Japan with Zen Buddhism AND 1200 guys in their pantheon ~ which really sounds like they picked up an awful lot of Indian baggage ~ and BREASESUS (see Saturday Night Live) on their ladies.
Now, I've got to find out if the Inari Sa'ami translates Inari as "spirits of the forest" or something like that.
Do you guys know how hard it is to find ANYBODY who knows any of these Sa'ami languages ~ WOW.
I've read quite a bit about the Hakka in the past but admit that I've forgotten most.
It is my opinion (contrary to this link) that the Hakka are or are related to the Xiongnu...probably the southern branch of the Xiongnu that allied with the Han. Anyway, due to severe droughts in the north, they were allowed to migrate across China (in five different waves) to the south. To this day, the Hakka are known as 'the guests.'
What is generally not known is that during the migrations those Hakka with Caucasian features were discriminated against and killed losing most of these features before arriving in the south.
Btw, there are Hakka associations/groups in almost every country.
Sami Language (Saami Language): complete guide to online learning
http://home.earthlink.net/~arran4/siida/sami-language.htm