Hi, welcome to BYC!
There really isn't much to identify since they are barnyard mix.
The chicks colors are going to change as they start to feather in. If you want help telling the difference.... notice things comb style, like leg color, beak color, skin color, ear lobe color, how many toes, or feathered legs. And compare those to your parent stock to try and get an ideal.
It's always fun to play guess the breed or gender.
In you pic, looks like there are production reds, maybe cochin, Australorp, maybe even mixes already.
See the flowered one has white ear lobes? That boy may give his offspring white ear lobes.... the clue to me that they aren't Swedish Flower after I wondered for a moment. Although I have a barnyard mix girl with white ear lobes and a crazy half pea, half straight comb... and she lays blue eggs. Because the blue egg gene is stronger than the white one. Looks like you've got a couple pea combs in there (adults).
Anyways, hope you benefit from my answer since I wasn't able to help identify them. Should be a fun bunch. I like having a variety of eye candy on pasture.