Sorry, I am too much of a KDE user to answer that question. In Discover you can add, remove, and order remotes via settings in the GUI. I’d assume it would be the same in Gnome Software, but I might assume wrong. If your distro does not ship it by default, you’ll need to install a plugin.
As other comments have pointed out, I’m not convinced the premise of your question is correct. I’ll throw in Slimbook to increase the sample size: