The hatcheries that I know of only sell frizzled in cochin and only in three colours: black, red and white so if it is a different colour then the feed store probably sell from their own stock or from a hatchery that I haven’t heard of.
I believe these chicks came from either Ideal or Privett hatchery before arriving to your feed store due to the golden neck d’Uccle chick as they are the two hatcheries that carry them. That would make #2 a black tailed buff Japanese and 3 a white frizzled cochin.