The Shantou or Swatow dialect is listed in the 16th edition of the Ethnologue. Why was is not included in the online edition? According to the records of the American BIble Society Library Bible portions in this dialect were first published in 1875 and a complete BBible was published in 1922. The ABS Library has a copy of this BIble.
We will add these dialect names to Min Nan Chinese [nan] in China for the 20th edition of the Ethnologue.