I'd have been slightly disappointed if you didn't have some composers I don't. At least I've heard of most of them. I have a whole LP of Sousa marches, but I don't keep it in the classical section. I'm surprised you didn't mention Joplin, whom I also don't keep in classical, though I recently picked up a piano miniatures record with some Joplin concert pieces on it, and when I catalog that it'll put him in the classical list.