This is chicken little Might be another Silver Laced Wyandotte mix. I can't see its face well enough in the photo to tell gender. However, I'm not seeing any male feathers, so it may be a pullet.
All of your white birds look like Cochin or Brahma mixes. I'm not sure on their genders, but am pretty sure that Bubby is a cockerel. The other two look more like pullets, but their combs are rather wide and look like they could be a three-row pea, which usually indicates male.