Both of those are basically famous for being his work. They didn’t fare super well in the competitions they were submitted to. And they were collaborations, regardless.
His books are inspirational and somewhat informative. That means he is a successful author of cryptography books, not a successful cryptographer per se.
Blowfish predates the AES (and I believe he designed this one solo), Twofish was an AES finalist, and more recently Skein was a SHA3 finalist. I'd say his crpyptography credentials check out.
His books are inspirational and somewhat informative. That means he is a successful author of cryptography books, not a successful cryptographer per se.