pr link building

I came across a few case studies about PR link building where people create factual, research-based stories and email them to journalists. I understand most of this thing, except one thing: who exactly are these journalists and how to find and filter them? is it all manual? any guide or info...

I need some Good vendors for all High-Authority websites, like Forbes, USA Today, Entrepreneurs, CNN, and Coindesk websites, with white-label prices. make sure I'll deal with them who gives the best price for my client. Share all the website lists you have through PM. Thanks!