Stan,
Yes, I also think they are all very male 'ish' ( except maybe #3) and so the criteria I applied in deciding if they would be worth space in a pond was based on that of male fish review. In nice brightly colored males you need and want pattern the most. Since males are gifted with strong color and bright flashy patterns, these are good examples.
The worst pattern of course is #1 as the fish is unbalanced. The #2 fish is a sanke type but the showa nose makes this fish interesting and worth keeping another year to see if this inbetween fish ever declares itself ! I think we are going to continue to see these mixed sanke for a while now as they flood showa with sanke. It would be an interesting experience watching that fish grow. Although I worry about the pec fins on three of these fish. I do think a trimming is in order for #2. The #2 fish can really teach a beginner the difference between sanke and showa - beyond the beginners description that says sanke have no black on the head and showa do! If you watch #2 develop you will see the nature of sanke sumi, it's body orientation and it's atmosphere. Indeed a kindai showa is something more than a sanke with sumi on the face.
Number three is obviously the only fish without the body line characteristics of young males. It is pretty nice in pattern and 'very showa' in both shape and coloring.
When you look at a group of male ish fish, besides the long slim body shape, look to the shape of the head and face to confirm a male look. And the nature of the shiroji is telling. This will place the fish in a grade as an example of a male fish of pond grade, show grade or even tategoi grade.
I think these fish are nice solid males. Limited in the koi show maybe, but still pretty nice fish to own and enjoy.
Not trying to be politically correct here but each one of these fish has something to admire about it. But for the pec fins! O the pec fins!!

JR