If you include TV shows there's at least a couple more for your list.Pbartender brought up Annie -- White family takes in a white kid.
I still can't think of any movies, but I have thought of a couple of TV shows:
Diff'rent Strokes -- White family takes in black kids.
Fresh Prince of Bel-Air -- Black family takes in a black kid.
Bullgrit
Off the top of my head:
Good Times: J. J. and family more or less take in a young Janet Jackson.
Glee: White single mother takes in white son's pregnant, white girlfriend.
Silas Marner and that movie version of the same starring Steve Martin: Rich white man takes in white girl.
Harry and the Hendersons: White suburban family takes in Bigfoot.
Wow. It's almost like there's a variety of options out there.
Interesting, though, that we can only come up with one example (Webster). And even looking at the TV/movies tropes page, the only examples that aren't weak stretches, are actually true stories.So when we get repeatedly get stories depicting blacks as being dependent upon the kindness of wealthy whites, there's a knee-jerk reaction (by some, not all) that this is just more of the same old same old.