Thank you for this interesting "shortcut". Please continue improving this app!
An interesting category would be horse-thieves, traitors, pirates, criminals, malefactors, derelicts, mobsters, mass murderers, and similar "dark side" people. They may make more interesting discussions within families than claims of being "uncertainly" distantly related to crowned heads -- this would be the case at least for me (e.g., Jesse James, Bonnie & Clyde, Machine-gun Kelly, (et al.) have appeared in my list).