Welcome to BYC!!! I am so glad you've joined us.
When you say "buffs" are you referring to buff orpingtons or another breed (many come in a buff color)? If you are curious about the identity of your other two you can always take a photo and post it here on BYC - we can probably get you sorted out right quick as to what they are. There is a whole forum for identifying breed or gender: https://www.backyardchickens.com/f/15/what-breed-or-gender-is-this
I hope you enjoy being a BYC member. There are lots of friendly and very helpful folks here so not only is it overflowing with useful information it is also a great place to make friends and have some fun. Unlike non chicken loving friends, family and colleagues, BYC’ers never tire of stories or pictures that feature our feathered and non feathered friends