Brian Steinberg Senior TV EditorFinance and politics aren’t the only things on the schedule at Fox Business Network.The Fox Corp.-owned outlet, which in recent years has generated its biggest ratings for a show led by Lou Dobbs that burnished a distinctly right-leaning brand of politics, will in September stock the bulk of its primetime grid with documentary-style programming featuring hosts like Mike Rowe, country music star John Rich, Stuart Varney and Cheryl Casone.