MOST hilts are replicas or based on a certain character's saber, but there is no list.
I think the reason for that is two fold. First of all, US doesn't really do "replicas" (though some specimens are pretty accurate). It's more "based on" hilts, so to say "This is so and so's saber", wouldn't be exactly correct.
Second would be licencing. For exact replicas, or to use a character name, royalties would have to be paid to the mouse. Not very conducive to keeping prices low.
I'm not opposed to said list, but it may need approval from the owner. If somebody wants to compile a list...lol
Generally folks just ask about a specific hilt, if they don't know.