Wait... I'm aware of a rather divergent but nonetheless clearly "Jewish" people in India... the opposite end of India.
These people are news to me.
Funny story... I once dated a Bnei Menashe Jew, a Chin. His family must have been close to the only Bnei Menashe in the United States. He was from Burma, not India, though. He was nonreligious, essentially atheist, but his family were deeply religious. They're clearly not of Jewish descent, but there's a sizeable Jewish community anyway. I think there's a similar group somewhere in central Africa that claims Jewish ancestry but is clearly not ancestrally Jewish.
.
Genetic tests suggest otherwise.