I was not able to figure this out. For my purposes, I wanted to restrict access to the other lists anyway as this machine is for a workplace arcade setup so I wanted a very straightforward setup, so I updated the ES config to not allow the B button to work. It loads All Games by default, and I turned off the ability to go from system to system, so for now it's working for me. Thanks for the input that was received.
Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first