The connection between NYC Basketball and the Catholic Church runs hella deep. The Catholic Church spent decades offering sports but Football was way too expensive so they went all in on Basketball.
All the Catholic schools (St Lutheran, Archbishop Molloy, Christ the King, Holy Cross, etc) have massive Basketball program histories.
Secondly, NYC has a very very very very deep Catholic population so when St John’s surpassed city college and become the Defacto program in the 60’s the Catholic community followed