My view of this section: I agree with most of these things being in MB as a video release (even if some, like videos for music TV, need some work later on to decide how exactly they should be entered).
There are two parts I’m still unsure about:
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Live shows. Something like this seems like it should be in MB, but I still cannot decide if as a bootleg release or as a recording. (I’m assuming it’s unauthorized, anyway - if not, then something like this but unauthorized!) I guess a one-track bootleg release following bootleg guidelines would make sense, but in any case, for now let’s stick to “release, recording or not at all”.
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Additional videos other than a music video / lyric video / live show. Something like a YouTube short with a small song preview, a 10 second TikTok promo, etc. In general, it kinda feels to me those do not really qualify as something I’d expect to see when looking for “musical video content by this artist” and I would either skip them entirely for MusicBrainz or at most add them as standalone recordings. Something like song-long “visualizers” (which seems to be a growing trend at least in some genres) is also something I’m unsure about - some such as this even star the artist and seem almost like a “music video lite” while others such as this are basically just background for an audio file.