Synology's new-ish Photos app does this, no?
Here's a screenshot of the "People" view under albums, from their Photos Mobile app. Looks similar under the Synology app.
Immich is pretty much a self hosted version of Google Photos. I highly recommend it. It's under very active development. I've been using it for a few months now and it's been rock solid despite all the dev on it.
I’ve been testing https://photoview.github.io running locally on docker and it’s working just fine. Face recognition works amazingly well and fast.
Nextcloud also has a photo album app with face recognition (additional app) which I’ve been meaning to try. There is also the new https://memories.gallery/ also in my list of apps to test :)
At https://github.com/photoview/photoview are also the following names as alternatives:
I hope that helps :)
I've tried them all and came back to photoview. Face recognition along with ability to use actual folders is what brought me back.
All things selfhosting and homelab related Resources: - https://github.com/awesome-selfhosted/awesome-selfhosted - https://github.com/awesome-foss/awesome-sysadmin