Compiling and checking and selecting and filtering and sorting the phone numbers for a phone book and printing that book and distributing it is not trivial. It

Compiling and checking and selecting and filtering and sorting the phone numbers for a phone book and printing that book and distributing it is not trivial. It involves significant work and even a few creative and editorial decisions, but on balance it's not that creative of a process, and the resulting phone book is not copyrightable. As for mixing in your own data, if the model weights inherit the copyright of the data then every existing large language model is illegal.