A software developer made a Chrome and Firefox extension called Knockoff that automatically hides, grays out, or filters products from sketchy brands on Amazon, which highlights just how many shady brands are on the platform and how commonly they show up on searches for basic items.
Yes, this is called “white labeling”. Brazil does it for a ton of Chinese products. The three big computer part retailers in Brazil get parts from other brands and put their own label on it and sell them as their own.