Intuitively, I'd pick "Jamiekan" because it's short and unique, but I'm really, really not an expert and I shouldn't decide it myself.
Now that the Wikipedia in that language is live, what should be the autonym for the Jamaican Creole language?
Currently it's "Patois", which is probably incorrect. I can see different names floating around: "Jamiekan", "Jamiekan Patwa", "Patwa", "Jamiekan Kriyol", etc., and I don't know what to pick. It must be something unique and identifiable to the language's speakers. The most common name that is used in actual publications in Jamaica would be perfect.