What breed of rooster is this?

[Writerchick324]

The people we got him from said he is a leghorn. We bred him with some RIRs, a blue andalusian and a black australorp. Waiting on the blue andalusian to hatch Sunday. Here are what the chick's look like. We'd like to hatch and sell more but I would like to know how to advertise what they are. Is the rooster a leghorn or EE or what? Google images makes it tough!

 

[Writerchick324]

 

[Writerchick324]

And why would some of my black chicks from the same hen and same rooster look so different? Some white tons of white and the others are grey or even brown.