I need help understanding adult products

I sell an adult product and I agree it's an adult product and should be categorize as such. To my understanding of the ToS and guidelines all products marked as adult can only be found in health household and baby. When I search my product by name or ASIN it doesn't show up in all departments but it will show up when in health household and baby. I understand that is how it was designed and that means it's working correctly. My question is why are other products that are basically the same product with more vulgar language and more explicit pictures able to be found under all departments. Does this mean their product hasn't been labeled as adult? If the categories go all departments > health and household > sexual wellness > bondage accessories > whips and crops why is there not a blanket of products listed after sexual wellness and any sub category after that they are all adult products. Are the adult products that can be found under all categories doing something to get the extra visibility? Are the listings old enough that these rules don't pertain to them like grand fathered in? Is it a performance thing after so many sells it doesn't matter if it's an adult product it will be shown in all departments but For example if Im in incognito mode and not signed in as a customer and i search bondage kit in all departments I shouldn't see any products, but that's not the case I see 7 pages with 48 items each. When I ask these questions in cases I get a generic response saying my product is labeled as adult and will remain adult or something like that.