ok, well, it's not the site Got Questions, they are actually giving info on this: (I'm not sure if you thought it was got questions or not, but I did not understand you short post so followed the link, so sorry...not trying change what you posted, but did not find the message clear)
Gathering of Christ Church (some strange unbibical teachings here)
According to the official website of the Gathering of Christ Church, this religious movement claims to be “sending an epistle throughout the world to the 12 Lost Tribes of Israel, which are scattered abroad and to all the Gentiles who believe the true doctrine of Christ by denouncing paganism and are baptized into the fold of Christ, keeping the commandments contained in the Bible.” This statement is general enough to sound almost orthodox, but upon further investigation, it is clear that this group's beliefs mean something very different from what they seem to communicate at first glance.
First, it is important to understand how this religious movement defines the “12 Lost Tribes of Israel.” According to the Gathering of Christ Church, the true Israelites are not ethnic Jews but are the Native Americans of North and South America and all Africans. The Gathering of Christ Church is comprised of mostly African-Americans and Hispanics. In fact, they claim to know which modern-day people groups are the true descendants of each of the 12 tribes of Israel:
Asher = the South American Indians
Ephraim = Puerto Ricans
Manasseh = Cubans
Gad = most North American Indians
Issachar = Mexicans
Naphtali = Pacific Islanders
Reuben = Seminole Indians and Australian Aborigines
Simeon = Dominicans
Zebulun = Central American Indians
Benjamin = Jamaicans
Judah = African-Americans
Levi = Haitians