How to tell a Class 6 from a Class 7 pattern of balding

I’m not sure what Norwood level my uncle is as I believe I take after him.  If I describe his hair loss stage hopefully you can help me determine if he is a Norwood 6 or 7 please. So my uncle has quite a large donor area on the back and on the side. On both sides of his head he has high parietal ridges but he is completely bald on top on his head I did see he has like 10 hairs still on top but they were spread out. His crown is bald. And looking at his head from above it is a horse shoe. If my description doesn’t help I don’t mind sending pictures.

Here are three links with pictures of a Class 7 pattern of balding: https://baldingblog.com/class-6-7-pattern-balding-can-expect-hair-transplant-photo/ AND https://baldingblog.com/generation-gapphoto/ The back remaining hair sweeps low and the side fringe area is mostly absent. The picture on the right here: https://baldingblog.com/permanent-zone-hair-lasts-lifetime/ shows the classic way to determine the Class 7 pattern patient with arrows showing how I do it.