Passage: NAME_1 NAME_2 is a Muppet character and NAME_3's most well-known creation. Introduced in 1955, NAME_4 serves as NAME_5 straight man protagonist of numerous Muppet productions, most notably Sesame Street and NAME_5 Muppet Show, as well as in other television series, films, specials, and public service announcements through NAME_5 years. NAME_4 is currently performed by NAME_6. NAME_5 original creator of NAME_1 NAME_2 originally performed NAME_4 until his death in 1990; NAME_7 performed NAME_4 from that time up until his dismissal from NAME_5 role in 2016. Question: From NAME_5 passage above, who are all NAME_5 people who have voiced NAME_1 NAME_2 in NAME_5 past? List them in chronological order.