Do you think this an ISA Brown and a ????

[Sajaha]

These chickens were hatched in April.
https://www.backyardchickens.com/web/viewblog.php?id=33612
I think the first one maybe an ISA Brown. The other one with the speckled neck I'm not sure. Also, these are pullets right?

Any guesses would be appreciated! Thanks!

 

[BantyRooster]

ISA brown and the speckled necked one is a New Hampshire Red.