DateTimeFormatter.withLocale(): reference of all the patterns depending on FormatStyle and Locale

I'm trying to find which norm/specification - if any - references all the patterns available in Java (using Java 8 or joda dateTimeFormatter), depending on Locale and FormatStyle?

In other words, if I could run the patternForStyle method on any Locale / Style, what result should I expect?

Did any international standardization body (ISO, IEC, IETF..) describe this?.

Thanks for your help!