The reason those brands have crazy names is that they’re rebranding stuff they bought from the actual manufacturer. Amazon will let any seller list identical products on the same listing, unless your brand name is trademarked. So to prevent another seller from using their (paid) product reviews, listing images, SEO, and advertising spend they make a new trademark. Because it takes a long time and a lot of legal work to find out if your trademark is unique for your product category, they make it something crazy that’s never been used for anything so there’s no chance they later lose their exclusive product listing.