Do you have a list of all the cards including the rare ones in each set? I'd love to see that to start collecting those
The card list I made which you can find on Gamefaqs covers all of the cards from all the sets. Only the first volume was included in the GBA game.
In terms of the rare cards there were a couple that Royal forgot to mention from the earlier sets:
Suikoden Card Stories Volume 1: 31 Luca
SCS Volume 4: 555 Luc, 556 Sasarai (Radiance Star Parallel foil card or Signed by the illustrator card only)
From the second series here are all the rare cards. The remake booster set is the same as Volumes 1 and 2 from the original series but they have been remade using the new style used for the cards in the second series. Not all the cards were remade though. There are some exceptions such as Pohl and Elza.
SCS II REMAKE BOOSTER: 390 Culgan, 392 Seed, 406 Luca, 435 Shu, 557 Leknaat, 584 Elenor, 585 Katarina, 586 Kika, 587 Glen, 588 Brandeau, 589 Lilin, 638-644 (special cards)
SCS II Volume 3: Royal is correct. There are no rare cards in this set.
SCS II Volume 4: 664 Snowe - Pirate, 665 Snowe - Drifter, 675 Reinbach the 2nd, 678 Akaghi, 703 Rakgi's Father, 714 Cray's son, 734 Mitsuba, 742 Robed Man (Star Parallel or Radiance Star Parallel foil card only), 777 Pirate Ship Subjugation - Rain version, 790 Leknaat (Star Parallel or Radiance Star Parallel foil card only)
Along with the list Royal previosuly gave that's all of the rare cards. Sadly Suiko5 never made it into the cards.
It should be noted that all of the rare cards in Volume 2, 477 in Vol 3, 555 and 556 in Vol 4 and 790 in SCS II Vol 4 are all secret rare cards. In our terms that would be the equivalent to "ultra rare" cards and are far harder to find. If you ever should find someone selling any of these cards for a fairly reasonable price and you either are a collector of the cards or want to collect them I would advise you to get them.