Mock draft 7.0 with 2 FA signings & updated depth chart

I’m going to ask the question I’ve always been curious about.

When someone makes a post like this, have they done this “mock draft” via a mock draft website?

Or are they basically just making stuff up based on “this is who I think might be available in the 3rd round, I really want the Saints to get Laviska Shenault, so I’m just going to project him falling into the 3rd round”?

More time than not, there’s no mention of mock draft website, so I’m always curious.