Breed? And possible roo? 6 weeks old

[Akrause57]

Pictures 1-2 all black pullet: What breed is she? Purchased from TSC
Pictures 3-5 barred rock: I have been in denial, posted a few times but no definitive answer, is this a cockerel?

 

[Rhodebar Lover]

1st likely Australorp or Jersey Giant. White bottoms of feet for Australorp and yellow bottoms of feet for Jersey Giant. Other looks like a cockerel