For what it's worth, the RDS Program Types my Sangean HDR-14 and Grundig Executive Traveler III recognize are:
Adult Hits (often used for Christian music stations - I think most K-Love stations are shown as this; interestingly Air1 stations still display as Top 40)
Classic Rock
Classical
Country
Hip-Hop
Info
Jazz
Language
News
Nostalgia
Oldies
Public
R&B
Religious Music
Religious Talk
Rock
Soft
Soft R&B
Soft Rock
Spanish Music
Sports
Talk
Top 40
I have noticed, however, that some radios have a more limited palette of Program Types. For example, Adult Hits, Soft, Soft Rock and Religious Music stations will often be lumped together as "Soft" or even sometimes "Easy Listening."