I think it's likely to be a male, but it is possible it is a female. It might be a red ranger, a meat breed, which could explain it's size. I think more opinions are needed on that one.
The Wyandotte and Sapphire splash are definite males. I think all the rest are pullets, but there's a big question mark over the one you call a golden comet. It is not a golden comet but some other type of hatchery hybrid or maybe a New Hampshire. It has no male feathering that I can see, but...