Ok good you were able to find that out! I’m going to guess that if he has a peacomb that he is an easter egger or some sort of hybrid. I could be wrong though that’s just my first guess I’m pretty new to chickens too and certiaonly haven’t seen all of the breeds, but he does look like my EE :)
Once you know what to look for, you should be able to tell without picking them up :)
Here is a diagram of the different and most common types of combs.. Easter Eggers and Ameraucanas have a pea comb, brown leghorns can have a single or rose comb.
Other common breed/comb associations include...