Some very strong points there Ambiorix. Sorry that I'm including your entire post by hitting reply here when I'm only referring to part of it, but I...
Not in MDLP K23b, IIRC uisashi does. My on-paper ancestry is a combination of Southern Han (from along the Yangtze river), Northern Han, and Manchu. ...
He was only superficially close to South West Slavs to be fair. He was also of low quality. As such, he's likely not basal M458*. Due to the quality...