Hi Gary,
I'm not entirely clear about your question, but it's best that you create content you know will move the needle for your brand and share it with sites you have a relationship with and that can help your business meet its content marketing goals. It's unlikely the websites you mention meet those qualifications, so I'd say start by creating a list of websites that you know can help your brand that publish similar content. Then reach out to the sites about sharing content on their website.
The key, however, is to be very specific about your goals with regard to the relationship: Traffic? Conversions? etc.
RS