Utility: Untagged faces

I'd like to see a utility that shows me all the photos that faces are detected but not named. I don't know of any easy way to do this. Inevitably, when I upload photos sometimes it finds a face of me or a family member but doesn't tag them but shows a face tagged for them just not named. I'd like to be able to browse quickly the photos and see which ones have that so I can quickly name them