Never heard that it was Jamaican/African influence but French Canadian in the Arcadian that morph into Cajun.
Close. It’s Acadian (no “r”), Acadia was a colony of New France, which included parts of eastern Quebec and Maine, as well as Maritime provinces.
Here’s the Wiki on Acadia and Acadians: https://en.wikipedia.org/wiki/Acadians
The Acadians were expelled by the British from New Brunswick, Nova Scotia, and Prince Edward Island during the French and Indian War. They traveled to the other French Colony in French Louisiana. That group became part of the Cajuns we know today.
No dispute on the origins of the Cajuns as documented above.
That said, we're talking about food (and culture) in this thread...
red beans and rice - African/jamaican https://www.mccormick.com/zatarains/red-beans-and-rice
https://en.wikipedia.org/wiki/Red_beans_and_rice
Gumbo - seasoned with sassafras/file (native american)
Beignets- french donuts (acadian/french)
Voodoo (culture) - jamaican/african https://en.wikipedia.org/wiki/Culture_of_New_Orleans
https://gonola.com/things-to-do-in-new-orleans/the-caribbean-connection-nola-meets-the-islands
https://www.myneworleans.com/jamaica-style/