Good idea to write the numbers on the photos for clarity!
Those two look like they could be Black Australorps, or Black Jersey Giants, or Black Sexlinks, or pretty much any other kind of black chicken with single combs.
You could look at the bottoms of their feet to rule out some of the options: Australorps should have white soles, Jersey Giants should have yellow soles. Black Sexlinks could go either way, but I think yellow soles are more common that white for them.
I agree, that does have the coloring of a Gold Laced Wyandotte.
Since Wyandottes do sometimes produce single comb chicks, instead of the rose combs they are supposed to, you might have a wrong-comb Wyandotte there.
I think #2 could be any of the breeds I mentioned for #3 and #4.
Chick #2 looks male to me, and I think #1 also looks male.
There are no Barred Rocks in your photos. Barred Rocks would have white barring that goes across their black feathers.
The white feathers in the wingtips are fairly common for any kind of black chicken. They usually get replaced by black feathers during one of the molts before the chick finishes growing up.