Breeder experience with coat types needed: different pics

I have an interested breeder, but I'm trying to figure out what to tell her about the puppy's coat. His hair is more straight, and feels more course than the others. Everyone else seems to have really soft hair. I'm wondering if anyone can help me to determine what kind of coat this little guy might have? Both parents are F1B's. Any and all thoughts would be greatly appreciated. I posted a few pictures of him, and also two different girls, to see coat differences. The first two pics are of the girls, and the rest of them are of the boy that I'm needing help with.
I'm changing the pictures.....maybe these will show better. The last picture is two puppies together, not sure if you'll be able to tell the difference in this picture....