Bantam chicks straight run - any guesses?

[LAchickennugget]

hi! I've had regular sized chickens since 2020 and since a couple have died since, I got 4 straight run bantam chicks from our local feedstore in the Los Angeles area this past weekend. Any guesses what breeds they might be? The store owner told me they were about 5-6 days old, mix of breeds, and so they would be about a week old today. All input welcome - informed guesses, wild hunches, worst and best case scenarios! TY in advance <3

1. black with some grey/white
2. chipmunk looking
3. light grey/some lavender
4. light tan mixed colors with feathered feet

 

[paddock36]

My guess is, they are all little chickens