My original plan was to hold off on posting any of these until after I took care of all this going back and re-tracing sources and adding artist tags crap. However, I spotted them on a different board and decided that if others have found them already, I may as well post them.
There are others on that site. I haven't posted them. I leave those ones to someone else.
I'm not quite sure I agree with calling this a Golbez cosplay. Most of this is what she wears normally. I would consider it closer to if Rosa were turned into Golbez's female partner.