So here is the general spread of religions as I think of it
Bahamas will be Non-Denom and might have a District Supervisor. This is because the USA colonized/conquered the area.
Most of Cuba is Mexican Orthodox. This is the result of a Crusade which Mexico launched against a Voodoo Caribbean Empire.
Haiti/Western Hispaniola and Jamaica are definitely Voodoo. Most of the Lesser Antilles are also probably Voodoo too.
The Dominican Republic / Eastern Hispaniola is Santerian/ Non Denom. Maybe Voodoo along the coasts and in the cities.
Trinidad might be Hindu
Agrarian Central America is Mexican Catholic, Non Agrarian Central America is various tribal religions which derive from a syncretism of Catholicism and Jungle Paganism
Yucatan is Mexican Catholic along the Northern and Western Coasts. Mayan/Catholic Syncretism everywhere else.
Quick Sketch of the Carribeans religion
Maybe, Colombia, Venezuela and Ecuador all fall under the influence of a separate Catholic branch. (Colombian Orthodox Church?) This grows the number of Catholic Churches in the Americas to
1. Quebec
2. Mexico
3. Santeria (Caribbean)
4. Colombia
5. Andean (Peru)
6. Chilean
7. Platanian (Uruguay and Argentina)
8. Paraguayan? (Paraguay is a very interesting place)
9. Brazillian ?
10. Northwestern Brazillian??
South America is a very big place.
A first draft history of the Caribbean
2000s-2300s: The various islands are roughly Catholic. Divergence spreads in the Lesser Antilles and this is where the neo-Voodoo religion grew.
2300s - 2400s: ???
At some point there is a Voodoo Caribbean Empire originated in Haiti and conquered most of the Caribbean. They were fairly tolerant at first, this is how Voodoo spread to Louisiana
2700s: The Mexicans decide to launch a Crusade against the Neo-Mayans and the Voodoo. A couple coastal Neo-Mayan city states are conquered. The second Mexican crusade uses the conquered cities as a launching point to invade the Caribbean Empire.
The Crusade conquers most of Cuba until the God President of Mexico dies and a civil war erupts in Mexico over who inherits. Cuba is still mostly Catholic at this point.
This leaves the Free and Sovereign Republic of Cuba which survives until now.
There might also be an Bahamanian Crusade, launched by the Americans.
2800s: The Caribbean Empire breaks up.