Hey thanks for the update.
Id probably amend my initial guess to include #4 as being a cockerel as well, but still a toss up. The neck is pretty solid black. Didn't notice that before.
Just wet them and send pics. It is difficult to see, but I'll catch it.
Maybe even send me some updated pics in the next few days without misting. A profile shot of the head and of the whole bird. A week makes a huge difference in sexing poleys 😉
On their hats, you are looking for
#1 - feather shape
#2 - the thickness of the lacing when applicable
#3 and most important - their forehead feathers. You'll see in this pic (although there are other obvious signs) the cockerel in front has short, feathers growing up and away, where the pullet...
1 and 4 are going to be your only pullets I believe. 7 is a toss up.
If you have a squirt bottle and the weather is warm and you can spritz their hats - let them dry and don't touch them. Then send a profile pic and face forward of each I'll be able to tell you for certain.