Zoom, RD is correct - my breeder has her pet puppies given a "modified" show crop, really a crop specific to "her" cropper. It's as long as a show crop, but the bell is wider. Also, my breeder's cropper leaves a "scallop" at the top of the ear, and the scallop is less exaggerated on a modified show crop.
Ilsa's ears were naturally VERY short - you can see the tips if you examine them closely, so the only difference between what she has and what she would have had if she'd been a show dog is the width of the bell.
My breeder stays away from "donkey ears" - which I see as a good thing. Her crops are almost always moderate in length, and customized to fit each individual dog.
In this photo, youcan sort of see the scallop. The ear on the other side is more scalloped - it's got an actual "tag" on the tip of the ear, but you can see on the ear facing the camera how the line of the ear swoops back.
And here, on Ilsa's ears, you can see how the scallop at th etip of the ear is practically nonexistent.