Here, I'll add some:
Nancy Sullivan and Marianne Curan both hosted two GSN Originals that paired with each other in the old days of GSN Interactive: "Super Decades" and "Trivia Track."
And, of course, Brooke Burns hosted the US version of Dog Eat Dog.
Now, for my international list:
Kirsty Young and Kaye Adams both hosted "The People Versus," in the UK.
Carol (Do-Do) Cheng (I'm a Chinese American, so I know this, having researched it as well) hosted the Hong Kong version of "Weakest Link."
Belle Yu, whose attitude is ABOVE a 10 on the "Anne-o-meter of Attitude", hosted the Taiwan version's first season.
That's all I have to add, for now.