Anyone know what breed of Orpington that is? I can't find a picture of one that color
I know you likely meant color and not breed, but just in case, all colors of Orpington are the same breed. The different varieties are all the same breed, just different color names.
I would guess it's probably crele in color.
Just to make sure, what date did you set the eggs? If it's been 24 hours since pipping and the chicks have made no progress, I would consider helping them, especially being that they were shipped eggs.