I still think #6 is WLR Cornish.
I have one or two I'm not sure what they are yet at 3 weeks...one is either WLR Cornish or splash BLR Wyandotte, the other looks like a frizzle buff black-tailed Japanese - only they don't come in frizzle! Somebody jumped over the breeding pen wall...I think...
#4 Might be splash rather than blue, but from the same category. my blues were darker.
#6 BLR or WLR Cornish?
#8 White cochin. WC chicks have that greyish on the back; one way to distinguish them from the buffs before feathering.
Please post your Porcelain, I am so jealous - I wanted a lot of...