Think it's a leghorn mix.... need someone to confirm this!

[Pele]

He's definitely a mix (leghorns have a very light frame, your roo will be heavy), and I'd be very unsurprised if there was Leghorn in his background since he hatched from a white egg.

 

[Chicken Frenzie]

Alright, thank you. Yeah, I was looking at him, then my leghorn, and she has a way different body build.