Does anyone know if there is a way to only show apps in F-Droid that are signed by the upstream developer and filter out all apps that are signed by F-Droid?

With Flathub you can do something like this, e. g. you can choose to only show "verified" apps: https://docs.flathub.org/docs/for-users/installation#subsets

#Android #fossdroid #fdroid #opensource

Installation | Flathub Documentation

Please refer to the Flatpak installation instructions for your distribution over at flathub.org.

^{docs.flathub.org}