I agree, I did not see any saddle feathers. I think you have several pullets. The wattles can kind of go either way at this stage. If any of the chick reddened up long before the others - he is probably a rooster. Also if one or two of them is taller than the flock mates - rooster.
Truthfully, have had chickens for years, and not too many years ago, was out there in the run, and he crowed...the first I knew of it. So it can be tricky. But in my experience, if I have ever looked and thought...could this be a rooster...they generally are.
I had that thought about one of your birds, a group of birds, and the one on the far right, just gave me that vibe.
Soon it will be self evident. People tend to know by 18 weeks.
Mrs K