My guesses are
Picture 1: White Silkie Rooster
Picture 2: Gamefowl could be pure, could be a cross hen. Brown Red in Color. To large to be a Old English Game Bantam.
Picture 3: Two roosters (white necks, blacker) 1 hen brown. They all appear to be mixed gamefowl.
Picture 4: Gwen and Steph More cross breeds, dont appear to have Silkie in them due to the lack of black pigment. Larger one may be a female, the other one looks male.
Nelly: Rooster mixed gamefowl
Salt and Pepper: Probably barred rock crosses, as barred trait is dominate, or sex-linkable. Both look like males males.