Thanks, fishmanlee !
I admit I have not heard some of these but they seem to have been released with various accompanying media, mostly games, rather than in the movie soundtrack itself.
Still, as it was presented in the movie, the soundtrack was mostly forgettable and did not have any strong themes. Be they bombastic and loud as the Imperial March, or something more restrained and emotional, as Leia's or Yoda's themes.
Williams is by far the best thing to happen to the prequels and he still did a fantastic job, especially considering (if this is true) that he was forced to cut and re-arrange his music due to Lucas re-shooting and re-editing scenes. But I still feel that AOTC and ROTS were not his best efforts.
Just my humble opinion, of course. Wouldn't mind him at all scoring any future movie, to the contrary.