Here is a black Silkie. Silkies have many colors. They are soft and fluffy, with no real hard feathers except wing feathers. They were developed in Asia. Ive read they good brooders.
If they are raised together they should be fine. I ahve a Jersey Giant, 2 australorps, 2 americanas and a golden laced wyndotte roo. Hens dont usually fight if they are familiar with eachother, regardless of breed, roos will if there is another roo around.
If a roo feels his girls might get shmoozed away by the other roo they will fight, and they are brutal.
Hens will nit pick at times, but not brawl. There will always be a pecking order, but that usually is established nice and early if they are raised together. Kinda like human siblings. Its best not to try nd control the pecking order unless someone is getting seriously injured or deliberately starved (which can happen)