The average CEO approval rating on Glassdoor is 69 percent. NBKC Bank’s Brian Unruh is rated at 98 percent. Because of his high rating, Unruh was named one of 2018’s top CEOs in North America and parts of Europe. He is the only CEO in the metro area to make the list. “The award speaks to our culture, which is made up of the 325 people and what they do…