lmao i'm not even from NYC
but i wouldn't say black New York resembles London..the only part that resembles London would be the high West Indian population. but just like London and Toronto there's an increase in African immigration, a few decades and i wouldn't be surprised if African population outpaces the West Indian population (like London and Toronto)
sans Haiti and Guyana (many if not most of whom are Indo-Guyanese), there's been a decrease in West Indian migration to New York as most are going directly to suburbs, Florida, or elsewhere in the South. given the sheer amount of Nigerians that exist, i fully expect Nigerian Americans to start being a presence in every city.
the culture tho is NYC which all immigrant groups assimilate too, NYC doesn't have the same faux-Caribbean culture/slang like Toronto and London