I'm sorry that no one replied earlier, does her crop feel full at all? if so you will want to search up "sour crop" on the site and follow the instructions.
It is possible, warm her up slowly. don't blow a heater on her directly just let her sit in a room temp. area. If she has any frostbite don't touch it, it just makes it worse.
The OP hasn't been around in a while, but yolks will float around until they really start to develop. As long as you're seeing veins like the picture You're in a good spot! Welcome BTW.
It's still speculation but on bird no. 3 I'm thinking we got a clean legged Midnight Majesty Maran from hoovers, the face and stance is looking like that, as well as the slate legs and pinkish skin from what i can see.
Welcome to BYC! You will want them on a grower feed with high protein, most likely not what you are feeding a layer flock. Meat birds do not roost and will grow very fast so by the time they are big enough to be with full size hens they will only be together for around 2-3 weeks.
At the end of...
For the wattles I would put Neosporin or vetericyn on them and let them heal on their own. get a secondopinion but if the beak seems to be intact I would put a bit of superglue on the crack to help prevent further injuries.