If you haven't looked already, my app Damselfly might work. It uses the existing folder structure, displays all files (duplicates or otherwise) and has metadata editing and updating.
You can run it alongside other apps, so you could use Damselfly and Photoprism, for example, and get the best of both.
Album support is not really there, but it focuses on folders mainly (because that's my use case). I have it running on a Synology, with a 5tb collection of 670k photos, and it's fast.
None, because I'm a developer of a self-hosted project. So I figure I contribute enough....๐