too soon to tell for sure but I'm not seeing any huge indicators either way of cockerel or pullet. Give it another couple of weeks. Any boys will be getting red in the comb by then.
The one on the far left is definitely a pullet. A brown Leghorn cockerel would have a black chest. I can't see the chest on the other but think the other brown is also a pullet. I lean towards pullet on the whites - the combs are still pink. Leghorn cockerels aren't shy in showing themselves at an early age.