I could be way off the mark here, but allow me to give it a shot. By no means is this in any order:
Jim Perry (Card Sharks, 1978-1981; $ale of the Century, 1983-1989)
Peter Marshall (Hollywood Squares, 1966-1980; All-Star Blitz, 1985...does Fantasy count?)
Gene Rayburn (Match Game, 1962-1969 and 1973-1979)
Bill Cullen (TPIR Classic, 1956-1965; among various others that spanned from that game to 1984 (Hot Potato))
Chuck Woolery (Wheel of Fortune, 1975-1981; Scrabble, 1984-1990 and 1993)
Dick Clark (The $10,000/$20,000 Pyramid, 1973-1980; The $25,000 Pyramid, 1982-1988)
Monty Hall (Let's Make a Deal, 1963-1977)
Allen Ludden (College Bowl, 1959-1962; Password, 1961-1967 and 1971-1975; Stumpers, 1976; Password Plus, 1979-1980)
Art Fleming (Jeopardy! 1964-1974 and 1978-1979)
Bob Eubanks (The Newlywed Game, 1965-1974; Dream House, 1983-1984; Trivia Trap, 1984; Card Sharks 1986-1989)
I could be totally inaccurate about any of this, so please feel free to correct me. Also note that, of course, I did not count any syndicated shows.
The Inquisitive One