The very first of many appears to have been Arthur Godfrey.
"Producer/host Funt was joined on stage by CBS veteran Arthur Godfrey the first season, Garry Moore Show announcer/sidekick Durward Kirby from 1961 to 1966 and Bess Myerson for the final season of the run. Buster Keaton appeared on the show; clips of his stunts were included in Thames Television's tribute to the comic actor. This 1960-1967 run was arguably the most successful version of the show, and the show appeared in the Nielsen ratings during this era too; ratings were: 1960-1961: #7[1]; 1961-1962: #10[2]; 1962-1963: #2[3]; 1963-1964: #7[4]
Candid Camera returned in 1974 for a five-year run in weekly syndication, with Funt as emcee again and John Bartholomew Tucker and Dorothy Collins as early co-hosts. Fannie Flagg, one of Funt’s writers during the 1960s run, also shared emcee duties with Funt during the 1970s era, as did Phyllis George, Betsy Palmer and Jo Ann Pflug.
The network TV version celebrated its 35th anniversary with an NBC special in 1983. Four years later, a series of occasional Candid Camera specials aired on CBS with Peter Funt joining his father as co-host."
https://en.wikipedia.org/wiki/Candid_Camera
