What good egglaying and friendly breeds are the best mix to have together in one flock (raised by hand together)?

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I had two black sex links and they bullied my other pullets, one to the death. All were raised together since they were day olds. I had to cull both sex links, so now I am down to a small flock of three. I will never get black sex links again. But I have had SLW, easter eggers, light brahmas, and pearl star leghorns. All of those were/are wonderful