Here is some info I found and will pass on. The Dominican Republic, Puerto Rico and Cuba semm to have many fruits common to all three i.e. avocados, mangoes, guavas, papayas.
Sweet potatoes are also a common element of a traditional meal.
Plantains though common throughout these countries, are especially popular in Dominican Republic. However in Cuba, the names are different but the principal is the same. I also found where fried plantains are as popular in the West Indies as they are in West Africa, where they are seasoned with ground ginger and cayenne. The mealy texture and bland starchiness of plantains, which came to the West Indies via Africa, makes adding these seasonings a refreshing counterpoint.