Missing scales in GarageBand for iOS

GarageBand for iOS has this awesome feature where you can choose a scale from the dropdown menu, and it shows you a keyboard that only has the notes from the selected scale. But it seems to be missing some pretty basic modes; Phrygian, lydian, aeolian, and locrian scales are nowhere to be found in the menu... Is there a way I can add these missing scales to GarageBand?