It's pretty easy to collect large lists of these types of code names from places like linkedin. Search for code name, find new code names, repeat.
https://www.google.com/search?q=site%3Alinkedin.com%2Fpub%2F...
https://www.google.com/search?q=site%3Alinkedin.com%2Fpub%2F...
(For example it is suspected that FOGBANK, which is a codeword for a material used in the construction of nuclear physics packages, refers to a silica aerogel)
https://github.com/sneak/Generate-Codename/blob/master/lib/G...
At least they stopped using "Project" and "Operation" prefixes when they got tired.