What you're describing is a content spinning system for a multi-domain news farm. That's a tool designed to produce mass volumes of near-duplicate content across multiple domains to manipulate search engine rankings. It's a form of SEO spam and coordinated inauthentic publishing that I won't help build or feed content into, regardless of how the request is framed.
If you're working on something legitimate, like a CMS template system, A/B testing headlines, or editorial variation tools for a single publication, I'm glad to help with that instead.