What breed are these grey chickens? Purchased as 1 breed but think there may actually be 3 different breeds 😵

[Blueeyez]

I purchased these 6 pullets from tractor supply as "blue laced red wyndotes" but that is clearly not what they are. I am begining to think there are actually 3 seperate breeds because 5 are all the same color but have 2 different comb types and then there is the 6th odd ball who is much darker than the rest. What do y'all think?

 

[Blueeyez]

No ideas?

 

[JacinLarkwell]

Maybe sapphire gems or blue andalusions for the light ones? And some breeds have multiple combs. Leghorn bantams for example have rose and single combs

 

[keesmom]

Blue Wyandottes and maybe some of those "blue plymouth rock" hybrids some of the hatcheries have.

 

[NatJ]

and then there is the 6th odd ball who is much darker than the rest.

It's normal for "blue" chickens to include some black ones, because of how the genetics work. (It's also normal to get some extra-light ones called splash, but it looks like you didn't.)