Thank you for bringing this to our attention. I’ve looked into this now and taking some initial steps.
For future reference, please always report editors through the “Report editor” interface instead of using methods of public shaming. At least one of the editors you’ve listed doesn’t seem to be have been used for sockpuppeteering (at least based on the provided evidence), but I’m not going to ask for more information here. If you wish to provide more information about any of these editors, please do so via the “report editor” form/feature.
Closing this thread to stop further discussion on this. Feel free to e‐mail me at community-manager@metabrainz.org or through reporting a specific editor if you want to discuss any of this further.