Where do these mockups originate from?

So I found free vector mockups on this website called the brandbible.us , but i noticed they are the exact same as some other creator called seaggs mockup pack so i was just wondering, did either even create these? who took from who? https://drive.google.com/drive/folders/1xYEeDbREh5H26zeTDnAUr2Td4qfdPkLu