Immich: https://github.com/immich-app/immich

Wiki.js is pretty simple and the solution I settled for after testing multiple options. Other examples can be found here: awesome-selfhosted

I’m using this since last week and it works great so far. I only have one issue where some photos in my timeline are incorrectly placed at a wrong date, but this is a known issue and should be fixed soon.

It is in the diagram I think: “Excalidraw”

Also never heard of it and always nice to find new FOSS.