I'm in San Jose and don't have silkies right now but check Farmer's Feed in Gilroy on 10015 Monterey Rd. I was there 2 weeks ago and they had silkie chicks for $5 each.
I just realized that these might not all be bantams? I don't have any experience with standards so you might be right with #3 being black or blue Cochins. The slight chipmunk pattern on its back made think it's some kind of laced or penciled Cochin.
These are guesses but I'll say
1 & 2: RIR bantams or Buff Japanese
3. Looks to me like a Silver Laced Cochin but since McMurray only has Goldens I'd say Golden Laced Cochin
4. Partridge Rock bantam
5. White Faced Black Spanish
6. EE/Ameraucana...Araucana chicks/adults have no tails and...
I wish I had a TSC near me! Still I've gotten bantams before from Ideal and I think this is what you have
1. Silver Laced Cochin- love that picture
2. Black, mottled, or birchin cochin
3. Gold Laced Cochin
4. Black Breasted Red Old English
5. Gold Laced Cochin
6. Partridge Cochin
How old are they? If they're atleast 6 months old, I think they all look like hens. I love splash chickens- the first of the two that you have is an EE/Ameraucana. #3 looks like Silver Spangled Hamburg, #4 a Splash Cochin.
It looks like you have:
1. Black or Birchen Cochin
2. Blue Cochin
3. Mille Fleur d'Uccles - the last one in this set of pics w/ eyes closed next to the MF d'Uccle is a Porcelain d'Uccle
4. Cute, but no idea. Probably a red smooth or frizzle Cochin if it has feathered legs.
5. White or...