A friend of mine was doing a back-and-forth naming of former game-show hosts who ended their careers in other game-show-related positions and came up with a laundry list of people, mostly hosts becoming announcers.
Some of which include:
Gene Wood -- Hosted Beat The Clock, and An6thing You Can Do, but finished as an announcer for G-T (was Combs Feud his last gig?)
Jack Clark -- Hosted Cross-Wits, finished as a rotating announcer on $xxx,000 Pyramid (?)
Jack Narz -- Hosted Dotto and Beat The Clock, finished as an announcer on All-Star Beat The Clock.
Others?