I see it on mom it's the sharp tip that only scovies have looks like Selma has it too. Fuzz ball looks to have it and also Flanders the other ones hard to see. On mom it's standing out because of the blk on the tip.What do you mean by bean point? The black spot on the bean? Only the two have it.
I would also say that they are muscovies if it weren't for the one that sometimes stands so upright with the tail pointing down to the ground. Unfortunately he never does it when I am pointing a camera at him.