iOS 16 Lock Screen photo shuffle missing people

I’m wondering if anyone else has encountered this problem.

The customizable Lock Screen is lovely, and the featured photos option makes good selections.

When I try to choose people to include in the shuffle, iOS 16 shows me many fewer people than I have set up in Photos. Annoyingly, it shows me some friends while missing important family members.

Has anyone been able to train the system to show a broader selection of people?