In my opinion, these puzzles were all manually created by their designer and are not derived from a deterministic wallet. This is because there are no visible patterns in these addresses that are typically found in deterministic wallets. I believe that understanding psychology is more important than cryptography in this case. We need to analyze the personal and individual characteristics of the puzzle creator to determine what pattern might have been in their mind when they designed the puzzles.
If you would use hashing methods like sha256 on a seed phrase, even if there is only a number or character changed, then are also no patterns. same as for the private keys. and the creator also masked them. also the bits behind the mask is lost information.