Unfortunately, your assumption is wrong, because none of the faqs available cover this topic. I just bought a PAL Saturn and now I'd like to start looking for games, and I'm mainly interested in Saturn exclusive games (as an example, I own the Daytona USA and Bug! PC games, and I'm sure there must be a ton of Saturn games that were released later on PSX or PC).
Now the problem is: which of these are exclusives, and which are the best? I'm mostly interested in RPGs, but I also like good games in general (for Dreamcast, my favourite games are Jet Grind Radio, Shenmue, Skies Of Arcadia, Phantasy Star Online, THPS2, Soul Calibur, and many more).
I think that Keio 2 Flying Squadron was only released in english to Europe, but that's about it.
There are several PAL 'optimized' (full screen, full speed) versions of games too.
As far as Saturn exclusives go, I'd remove the obvious ones from the list and then plug the remaining ones into a search engine and see what references you come up with. It would be a long and slow process, but I can't think of anything else.
As for the best ones, there are several 'name your favourite Saturn games' threads already. Try reading some of those.
You're right, by "exclusive" I meant games that were released only on Saturn. In this respect, Panzer Dragoon isn't exclusive, but Panzer Dragoon Zwei and Panzer Dragoon Saga are...
Let me show you my "wish list". Please tell me whether any of these games are from the "to avoid at all cost" category... I've looked for reviews on those games, but there still are some games on which I haven't read anything (noted with a ?)