The United States don't really have Indian enclaves from what I can tell though. It seems like the most Indian areas are in the NYC region, around southern Richmond Hill in Queens, which is right next to Jamaica, Queens and apparently has a mix of West Indian and East India/South Asian residents, with around 30-35% South Asians, 20-30% Blacks. There's also many Indians just north of Jamaica, as well as in suburban central NJ, but no more than 30-35% (unlike Canadian enclaves that can be 50%+).
As for the black immigrant groups of NYC, Africans seem to live in similar neighbourhoods to African Americans. Dominicans live in Hispanic neighbourhoods. Haitians sort of in African American neighbourhoods, but often at their edges. Jamaicans are focussed on African American neighbourhoods, but mainly the more recent enclaves like Jamaica, Queens and Eastchester, Bronx/Mt Vernon, and less so in Bed-Stuy and Harlem. Trinidadians mostly live in African American neighbourhoods, but also in Richmond Hill alongside the South Asians.
Indian enclaves outside of the NYC region are much of enclaves, usually just 10-30% Indian and over a relatively small area, or maybe 5-15% Indian over a larger area.