Just to add that if Etsy takes down a listing, it probably isn't ideal to repost it until you find out what is wrong with it. Just keep using one message/email to keep responding, because you go to the back of the line if you open a new request to try to get info. Many times listings are removed in error and they will admit/relist if they deem it to be that. You can also reverse search your images and see if some of these wholesale sites like Aliexpress, etc., have stolen your images, which could also trigger a handmade violation.
As a side note, I used to have a superhero collar a million years ago and Warner Brothers legal team came at me directly to my email and not through Etsy, even though other people were selling the exact same thing. Using the 'other people are doing it, so that means I can too' excuse doesn't work with these big companies protecting their IPs. They can come for just you or they can come for all of you and you definitely don't want to be caught up in that situation. Although I did work out permissions with them, I decided not to relist once I sold the last of the design and the stress of dealing with them to begin with, although the lawyer was super nice, wasn't worth it. Back then, it seems like these companies weren't suing people like you read about now.
If you are on your final policy warning, I would tread carefully at this point and not do anything to get your shop closed down permanently because you won't be able to open another one, ever. Just try to focus on what's Etsy legal through the available resources and through your info you're able to glean from them and not what other people are doing.
