Any confirmation on this?

For a while I have seen this statement in San Myshuno article on The Sims Wiki, and I'm now asking someone here to confirm this.

The statement goes:
Three unused families intended for San Myshuno exist in the game files. Pond, consisting of Jimmy and his daughter Alaina. Powers, consisting of Randy, Patricia, and their son Kennedy. Riviera, consisting of Rita Riviera, and her boyfriend Memphis Waters. There is also an unused test household, consisting of Andy Campbells, Iko Yono, and Joel Meadows.

I'm too lazy to check this.