What languages are the chinese input methods associated with?

In the help file for iOS Dictation the following paragraph regards to selecting language for dictation

When you want to change the language used for Dictation:

1. Tap the globe icon to change to the keyboard for that language.
2. Tap the microphone icon to start Dictation.

Note: To use Dictation, the keyboard language needs to be a supported language. Dictation is designed to recognize the specific accents and dialects of the supported countries listed above. Since every language has its own accents and dialects, the accuracy rate will be higher for native speakers.

Now there are couple chinese input methods for simplified or traditional chinese typing. However, which one relates to "cantonese"? They both use the same characters but with different pronunciation.