I had sellers on Ebay and on Facebook selling one of my 3D models. Maker World said I didn’t fit their criteria for their copyright infringement beta program. However, I was surprised as I was successful reporting models to both Ebay and Facebook and having them removed. Facebook was more work as I had some responses from them that the models being sold that were different. It appeared that I had different people from Facebook looking at your individual reports. I added more photos to my Maker World and pointed out the obvious things when I resubmitted my reports. Also Facebook Marketplace is harder to search for sellers as you have to search on a 500 miles range.
This model is not being sold on Etsy or AliExpress as far as I can tell.