Why not add all?
These are also known as art tracks and are the same “videos” you listen to on YouTube Music.
See also On Music Automatically Uploaded to Youtube ('Topic' pages) - #6 by chaban
A “video” with a still image is not consdered a video
This should be a separate recording and not linked to any audio-only recording
Unsure about these. Personally I don’t bother with such unless it’s a more proper video