Those two with Greer Garson both have World War 2 as a backdrop, as does
The More the Merrier (free on YouTube). It's another splendid romantic comedy, starring Jean Arthur and Joel McCrea, with Charles Coburn winning the Best Supporting Actor Oscar.
Finally (maybe), Father of the Bride, with Spencer Tracy in the title role and Elizabeth Taylor as the cause of all the fuss. My favorite Tracy, and that's saying something.