Some English dictionaries list differences in spellings used in New Zealand English (en-nz) and Jamaican English (en-jm). We do not have these codes available for monolingual text and lexemes at the moment like we do for en-us, en-ca, en-au, en-gb, and en-in.
Example lexeme with a New Zealand spelling difference: https://www.wikidata.org/wiki/Lexeme:L34215
Example lexeme with a Jamaica spelling difference: https://www.wikidata.org/wiki/Lexeme:L1327633