Well we would just have to agree to disagree on this one.
Most people would agree that it does not matter if the style is categorized or not.
It is a style regardless of where you put it.

Once it has the basic feature of a multi track groove that is looped and follows your manual chord changes, then it is a style.
Where you put that on the keyboard does not change what it is.

If I put a funk style where all the reggae styles are it does not change the fact that it is a style.

The categorization of a style is a manufacturer specific feature to help the user and not to define what the tool is.

The Motif XS may have a rock style followed by a blues styled followed by a hiphop style. It does not change the fact that they are styles.