What breed are these girls in Ur opinions?

[RooStar Chicken Gang]

Two of these birds bit more grown up. Including the mystery grey one.

 

[RoostersAreAwesome]

Two of these birds bit more grown up. Including the mystery grey one.

View attachment 2825243View attachment 2825244

That body shape on the splash suggests Orpington, it’ll be interesting to see if she lays brown eggs.

 

[AusHen]

If they aren't pure leghorn I would agree with a production white (leghorn x NHR) The other might be another production cross as well which uses Australorps, if a blue or splash was used that could explain the colour

 

[RooStar Chicken Gang]