I'll give you a third -
Mochimiko on Youtube makes Hololive animations that also feature the same very distinctive pouty face.
I was actually coming here to post the same thing, because this is something that's been bugging me for
months now, ever since I pitched in on a discussion on another site (It was Danbooru - are Danbooru links okay to post here?) regarding the idea that Harumina (who draws the "Cockora-chan" comics) and Mochimiko were actually the same person:
Now that I have a third clear example of a face being drawn in this way, and can be
reasonably certain that Zyugoya is not the same person as either Harumina or Mochimiko, I think that lends further credibility to the idea that there's some third, older source that all three artists are referencing, though I have no idea what older source might be.