Your description was perfect! Right on target!!! They had found these scuffy little nomadic tribes around the world and I'll be dam#ed if they were not all pieces of the lost tribes! And Stacy Keach narrated it with a straight face. We just laughed and laughed it was such a put up deal.
They have to sell this pitch to kids I guess because no adult would be dumb enough to believe it. Don't you just have to guess where the money came from for this propaganda "search"? LOL.
I bought a copy of this CD (The Myth of The Lost Tribes of Israel aka Beyond The Sambatyon) several years ago to examine it and had the same reaction. Slick Propaganda masquerading as a serious and honest search, just like the TV specials with Mr. Spock and others.
They must not have sold many as they have dumping them on eBay now some time. OTOH maybe they are being produced and dumped at cost to "buy market share". {ggg}.