Peter has kindly created an index of suitable styles, but these cover most, if not all Yamaha styles and are not specific just for the SX900's factory loaded styles. I do not know of one that is just for the 900..Most people would use a master list like Peter's and just import the styles they wanted if the 900 did not have one to suit a particular song.
I think your best option is to use the Tyros 5 Music Finder files ( which are all song titled ) These can be converted on the SX900 to a Playlist and are also then stored automatically as registrations. They use the on-board factory styles for each of the song titles in the files
Although this video demonstrates the conversion using a Genos .It works just the same on the SX900
Hope this helps, well in part!
see -
https://www.youtube.com/watch?v=5nB6ntNgJhMKeith