Each person registering with the hosting service agrees to the host's Terms of Service to NOT
"publish, post, distribute, disseminate, advertise or link to any: (i) content, site, topic, name, material or information which is defamatory, libelous, slanderous, or infringing; (ii) software, content or other material protected by intellectual property laws, copyright licenses, rights of privacy or publicity, or other proprietary rights, unless You own, or control such rights or have received all necessary consents for Your publication, distribution, or linking of such software and other materials;"
They must have hundreds of submissions daily. What program can check the legalities?
If you can write one, my bet is there are a lot of venture capitalists that would like to talk to you.
Like eBay and others they may deny service regarding offenders when notified.
Looks like you are doing a good job of monitoring - why not let them know of the culprits. You can give particulars at
https://www.payloadz.com/contact.asp