http://baby-footprint-graphic.com/images/picture_of_baby_footprint/photo_of_baby_footprint_02.jpg
This is a picture of an actual baby, and you can see the 3 pads... I hope this puts this to rest.
TY, I see what you mean but did you find any in your search that showed those pads when used with ink to make a footprint? I didn’t find a one.