That's great news! Most crosses lay really well... OE is Olive Egger... a lot of EE's or true Ameraucanas are crossed with dark brown egg laying Marans for olive colored eggs...
Your rooster has leg feathers, most likely he is from OE crossing... your grey is actually called blue and her and the white are EE's... the other 2 look like one is a Production Red and mixed breed for the last...