The Anglo-Saxon ("Anglo" meaning bull, or ox, the symbol of the tribe of Ephraim, and "saxons" meaning "sons of Isaac") Celts, the Scythian Celts, the Cimmerian Celts, the Sarmation Celts are the descendents of the ten tribes and they did migrate west. God's chosen is a whole different matter though. God's chosen will number 7000 and they are people that believe that Jesus died for our sins on the cross that are so zealous and true that God has and will "elect" them to prophesy and stand against the coming beast system. Now there are also the elect chosen through time, they number 144,000, and most have already passed on. They were the prophets, etc. There's no genetics involved with the elect, since those that are elected simply have to believe zealously. Of course most are probably in the western Christian nations since that's where most Christians are. The western migrations are simply those that are descended from the ten tribes. The "chosen" and the "tribes of Israel" are confused with each other. The tribes of Israel consist of probably a billion people today, the elect number only 7000. God chooses whose sould get to be placed in which body or nation and I'm sure that he chooses souls that stood with him in the rebellion to be placed in bodies descended from the lost tribes, since he always said that the lost tribes are his people and would be a blessing to the people of the world. As far as the Jews go, they are descendants of the tribes of Judah and Benjamin and Levi and I'm sure God will continue to look out for them just as He has for us as we made our way to Northwestern Europe, the UK, and the US.