With such sanctified list of libraries, I think it is not unlikely, that more packages exist out there, that are simply not listed, or that there are repos out there, showing how to do things, but are not isolated libraries.

Maybe a third-party awesome list or so would be interesting.

Other than that, I guess one could get involved in the community to ask questions about things one needs for some project, or search more specifically for things one needs and hope to then find them.