Help me guess what chickens these eggs are from?

[Nametaylor11]

Hi all. I just got some hatching eggs from Ebay in the incubator this week. My fiance and son have been debating what chickens these eggs are from. Would yall mind taking some guesses?
They can be from the following flock:
Maran
Black or blue australop
Silver spangled hamburg
Barnevelder
Langshan
Chocin

Also the middle egg in the back is much smaller than all the others. Like silkie sized lol and the light brown to the right of it is much larger than the others.
TIA!!

 

[Buffy Brahma Mama]

the light ones may be cochin

 

[JacinLarkwell]

The two darkest are from a marans. Can't tell any others because the light is changing their colors

 

[Nametaylor11]

The two darkest are from a marans. Can't tell any others because the light is changing their colors

The second picture is the truest to IRL color