They all look like girls to me. I have a splash that looked like that one as well and even though it was hard to tell if it was a boy or a girl due to comb growth and wattles, it is still a girl LOL.
At almost 5 months old, I'd like to say they are all girls. However, could be wrong if the splash is a late bloomer. The comb doesn't quite look wide enough to yell boy at me.