Not sure what they are

[AKsmama]

There's no doubt to me that 1-3 are Cuckoo Marans. I have 6 of them and they look exactly like that. They're more "spotted" than barred.

 

[jynnjynn]

1-3 Look EXACTLY like my barred rock did at that age(even the legs, sort of pinkish with a darker gray stripe down the front) she had a light spot on the crown of her head as a chick (which I can see on #1 and #2), and her bars looked like that early on but are filling in to be more bar like as she ages, and her legs have turned yellow. I'm new to this so you might take what I say with a grain of salt.... maybe my "barred rock" is a actually a cuckoo maran... If you were told they are cuckoo marans by whoever you bought them from, they probably are.

Here she is as a chick

Here's some random pic of barred rocks that look about the same age as yours.

and here is mine recently(~10weeks old) really blurry, behind my frizzle cochin...
Where you can see that her legs have turned yellow and her bars are filling in better.

#4 and #6 look like gold laced wyandotte to me

#5 looks like your silver laced.