Peter Edmiston, Eli Savoie, and Greg Gaston have all been at the station for 2 decades. I think they are (were) Flinn employees. They aren’t going out and getting their own commercials; they definitely have sales staff doing that.
Dave Woloshin definitely has the same thing whatever the late George Lapides has were he gets his own sponsors and may be an independent contractor but I don’t think it’s a pure “holler for a dollar” situation.
John “The Rainman” Rainey straight buys his time. I don’t think there are any Flinn spots during his show.
I don’t know about the newer folks on the station, like John Hardin. I’d suspect Stats is an employee. He has spots, but I don’t know he has enough to think he is buying his time.
Old personalities like Rob Fischer and Eric Hasseltine, I’m sure they were Flinn employees.