Variations on a theme

Here's another treasure from the Krannert Art Museum in Champaign, attributed to the workshop of Neroccio di Bartolomeo de' Landi (1447–1500)about whom some interesting text can be found here

And here are some other variations attributed to the same artist, though they all  feel quite  different to me.   I wouldn't be surprised if each was actually painted by a different artist.

This one is my favorite, although it's not really a fair comparison, since this artist did not have to fit two saints into the back corners.