I'm clearly not the only one who thinks the new groupings in the Genos and SX models make less sense than the old ones! Yes, you can use the Search Function, put them into Favourites etc, but it's hassle.
When I change keyboard, I always make a point of copying every style in the old one and then either use them as required from USB stick, copy a few into User - or, indeed, given the memory capacity we now have, all of them into memory. On an SX or Genos, I'd have folders for, say, PSR2000, PSR3000, PSR-S900 and so on, with the styles in their original categories/folders.
Not only does it make things simpler, but we all know that Yamaha have a great habit of updating styles, but keeping the name the same. So you load in the style and find that it doesn't do what you were expecting, or what you want. Had that this week. Student chose Piano Ballad but it was too complex, even on A and B, so we tried the same style from the old PSR2000. Perfect for his song!