Murray Perahia playing Bach is always fantastic. I particularly recommend his recordings of the partitas (here's a performance of one of them). Also good are his English suites and Goldberg variations. Perahia's Bach is lyrical and contemplative, probably more Chopin-esque than other interpretations (to the extent that Bach can be Chopin-esque).
I suspect you'll like Scarlatti. I recommend Yevgeny Sudbin's recording of his sonatas.
I don't listen to much ragtime, but if you're into bop, I highly recommend Thelonious Monk and Bud Powell. Since you like solo piano, get the album Monk Alone. It's so good. Also, "Thelonious Monk" has to be the most bad-ass name ever.
Thank you. I really like the first few you posted, and I'll check out the rest.
Don't know why you had a downvote...
This is the monthly thread for posting media of various types that you've found that you enjoy. I find that exposure to LW ideas makes me less likely to enjoy some entertainment media that is otherwise quite popular, and finding media recommended by LWers is a good way to mitigate this. Post what you're reading, listening to, watching, and your opinion of it. Post recommendations to blogs. Post whatever media you feel like discussing! To see previous recommendations, check out the older threads.
Rules: