Shared Creole identity does not produce regional unity because creolization varied by territory.
Evidence
Territorial differences in nationalist discourse across the region are related to differences in Creole constructions by which they are shaped, and have led to different patterns of contestation. Despite the universality of Creole identity, there is not much to cement a sense of “oneness” in the Caribbean, even among the CARICOM territories. First, historical differences have shaped the different constructions of Creole society. Second, the process of creolization has been differentially shaped by territorial differences in the form, nature, and pervasiveness of amalgamation of those outside the European-African continuum. This is particularly evident in Trinidad, Guyana, and, to a lesser degree Jamaica and Dominica. Third, the presence and significance of white Creoles vary across territory. They have virtually disappeared from Guyana, while in Barbados they comprise a significant even though numerically small presence. In Trinidad, white Creoles trace their descent to Spanish and French settlers who preceded British colonization. — David Theo Goldberg, John Solomos, A Companion to Racial and Ethnic Studies, 3254