John Barbour, a comedian, talk show host and critic who helped create “Real People,” a hit NBC series that was a notable entry in the evolving genre of reality television, died on May 10 at his home in Las Vegas. He was 93. His death was confirmed by his son, Christopher, an executive producer of the TV series “Criminal Minds: Evolution.” “Real People,” which ran from 1979 to 1984, lightheartedly profiled little-known, usually offbeat figures at the edges of society, including Navajo code