Some of those credits are a little off. To my knowledge, Sakaguchi was only the producer and director of FFI-V and Spirits Within. He was only the producer for FFVI and FFIX (with a original concept writing credit) and had no real involvement at all in FFX.
Also, Nomura was only a character designer for FFVII, FFVIII, FFX-2 beyond having a writing credit in FFVII (he worked on the original concept with Sakaguchi, with only the vague concepts within it making it into the final script).
Most of these can be found on www.mobygames.com. For some reason they only list credits for the Advance versions of FFIV-VI though, so I'll have to track down another source for those games (those only other game credit site I could find was in Japanese).