Your top hens look like cochins, but the dark color of the comb makes me think they may also have silkie heritage. That's a popular mix. How many toes do they have? Five would be another indicator of silkie in the background.
I'm not sure on the little brown speckled birds--d'uccle? They look like poorly patterned mille fleur, but I'll defer to the bantam folks.
Mille fluer, that's right. I couldn't remember what the lady called them plus wanted to get second opinions, lol.
The others I know are Bantam Cochins but not sure on the type. The daughter, not shown, has frizzle/sizzle genes. I'll post pics of the daughter when I can.
The black and white ones look like they could be Silver Pencil Cochin Bantams, and the others do resemble Mille Fleur d'uccle Bantams. Not sure though, I'm not really a bantam person either. I'm sure someone will come along and help.