First I must defend the crayfish. I realize everyone has different results, but I have had and do have a lot of crayfish. Depending on type most have very similar temperments. I have had two indivduals that were just born killers, the Charles Manson of crayfish. Both of these were Clarkii. I have kept maybe 15 different individual Clarkii and those two were the only problem crays. As long as you don't stock bottem dwellers, corys, loaches, eels you should be fine for the most part. Fish with long flowing fines are susceptible to being captured. Aged male fancy guppies, bettas and that sort of thing. Other than that your crayfish should not bother anyone. may be susceptible. NOTE: The deeper the tank the less the threat.
Alleni like to chase fish. They are not good at chasing and worse at catching them. I have had them with guppys, gouramis, tetras and misc livebearers.
Marble crayfish don't even bother to chase. They just do crayfish stuff and ignore the fish. Mine reproduce with Endlers and Least Killies if that tells you something.
Cherax have claws so large compared to body size they can't move fast enough to catch fish that are dying until the end. They may be huge, but they are not a threat to the fish.
I have not kept the dwarf crayfish yet, that is next years summer project.
My question, how large is the tank? You have a number of fish with significant bioloads.