You've got some cuties! At this stage, it's going to be difficult to tell. A list of breed possibilies (by hen and roo) can help, time will tell. That being said, 5 toes are only on 5 breeds. Anything else is going to be a mix with 1 of those breeds being involved. Black skin is another that only shows in a few breeds. Feathered feet is also limited to just a few. Color of shell hatched from can help also. Type of comb (rose and pea combs on new chicks can be difficult to tell apart). As they feather out, more can be revealed. Crests (partial crests can pop later) can also help figure out what they are.