Hey there, so it sounds like you got the chicks from a retail store, like a feed store? That is helpful because it tells us that they have most likely come from a commercial Hatchery rather than a private flock.
There are some angles you can capture for us to help us better help you. For example we need to see the area where the chicks comb will eventually develop, this is called the comb bud and even though there is not currently a comb there it will allow us to see what type of Comb the chick will eventually have which is a key characteristic of differentiating between breeds.
Next we need to see legs.. this will allow us to see color as well as whether they are clean or feathered. It's most helpful if we can also see the toes as some breeds have different numbers of toes.
For now I can tell you that the first bird show and will end up having barred markings, as this is indicated by the spot on the top of its head. Your little red birds will end up being brown/red when full grown