First one looks like a Black Tailed White Japanese and the lower one looks like a Black Tailed Buff Japanese. This is most likely the case especially if the are not very big (<2 lbs. ie. Bantams)
Sorry not an expert but with as little information about age and weight those are best guesses. Good Luck!
Did anyone ever find out about the breed of the bottom rooster? I have one that looks identical except he has a double cone. I would really love to know.