Help identifying these five toed chicks

Hi,
We are new chicken owners and only picked up our chicks yesterday actually.
We have four white (with maybe a touch of yellow on the head) and one light brown chick. They all have five toes.
To be honest I thought it would be much easier to identify them but everything I find that looks like them has four toes.

Does anyone know what I might have? We live in a colder climate and I don't want to bring them outside too soon, especially if they're a sensitive breed.

 

They all have the same type of comb, brown one included, you can see it better in this picture.

I will post one of their feet shortly, I'll have to wrangle one first!

 

The brown one is bigger so I thought that would be better to photograph, all their feet look like this though

 

I just googled some images and I definitely see some strong similarities!
Thanks so much, hopefully I can care for them better knowing a bit about their breed.