Cockerel or Pullets

[Blue Andalusian]

Hi! We have five 8-week old chickens with an Easter Egger rooster and either an olive egger, cream legbar, silkie, or buff orpington hen. First time chicken mom and unsure how to sex them. I have my guesses but thought I’d ask for some help. Thank you!

#1 - either olive egger or cream legbar
#2 - buff Orpington
#3 - silkie
#4 and #5 - look the same and either olive egger or cream legbar

i think 1# and 3# might be Cockerels