Who are Phil and Kirstie? Got em all apart from that...you are clearly British: plenty to bamboozle our American friends with here. Good quiz: try mine here: https://www.jetpunk.com/user-quizzes/117178/random-british-double-acts
Oh dear, I have tried yours and we Brits dont know many of those either! Phil Spencer and Kirstie Allsop present many amazing TV programmes over here around the buying and selling of homes.
Phil and Kirstie was fine, Phil and Holly really should be accepted too (certainly should have been in 2020). There's no point trying to make it "international" when you have proudly British answers like Chas & Dave and Cannon & Ball.
These are my personal choices of "couples" either in reality or fiction. I am not convinced that anyone outside of the UK would have heard of Phil and Holly, and they are no longer an entity. It is not meant to be an "international" quiz, it is chiefly a British quiz, with additions of famous partnerships that anyone playing this in other countries would have heard of, or famous films, plays etc. that have featured on British TV.