All anyone can do (including the people you tagged) is file a ticket with Medium, and you can do that, too. What I’d do is click on each of the 3 identical stories and copy the urls.
Then, you can click to open a ticket here. Once you choose rule violation from the drop-down, the rest of the form will appear. I’d include the 3 identical stories so they don’t have to dig for them. I imagine they have a ton of email to go through daily. :)