Scichilone is specific to the Agrigentino, of Aragon and Agrigento, and Nisseno, of Butera and Caltanissetta, Scicli, very very rare, is definitely Sicilian, Sciclone, absolutely rare, is probably due to errors of transcription of Scicolone that is Typical of the area comprising the provinces of Caltanissetta and Agrigento, they should all derive either directly from the toponym Scicli (RG) or from its ethnic: Scicolone = Citizen of Scicli.
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