Ian:
I did a test with the Report writer on the Genos Playlist, and the Registration Bank Names are identical to the Playlist entry names so it would be very easy to relate them.
Although the report function will tell one the actual voices settings for each registration bank/button, there is nothing that will list the available OTS voices for each style / variation in those registrations.
However, within YRM if one edits a button in any of the Playlist registration banks, and clicks the option "View OTS", all the voices available for the style in the registration button will be shown for each variation.
I haven't created a way to list that stuff as yet, but maybe that's a new idea for the future.
Cheers,
Murray