Hi there and welcome to BYC!
As stated by other posters ALL birds are suitable for eating that you have listed including the Sumatra AND their offspring. Whether you choose to eat them or not is a personal choice.. Even Silkies dress excellent for the table.. None of the breeds you mention would be breed I would keep IF I TRULY cared about putting meat on my table. But if they were basically a pet flock and you're just gonna eat what you hatch in order to be a more responsible and reasonable choice than expecting every male that hatches to become a flock leader of his own, then sure why not!
It's entirely possible to keep two roosters in a single flock without excessive mating or excessive fighting and I do it often! I also have a stag pen.. where ALL boys go and get a chance to grow out with each other for my dinner table OR to be selected for breeding qualities.. since heritage breed birds are almost always actively attempting to mate BEFORE harvest age. I put my selected breeding rooster with the flock when desired for hatching. Stag pens or bachelor pad.. NOT without it's challenges BUT highly recommended as a viable means of cockerel/rooster/flock management.. If you have the resources. I agree with those Sumatra looking like they have pointy saddle feathers and likely being cockerel.
Notes that were given and I'm affirming.. age of bird determines preparation method.. Older birds need slower and lower cooking with moisture added (or pressure cooking).. make for good stews, casseroles, ground meat fried up for spaghetti and tacos, or shredded meat for sandwiches or burritos, YUmm!
Older birds also NEED to be rested for about 3 days.. more is acceptable and they stay fresh in MY fridge for 2 weeks after harvest with no slime, smell etc. (small batch harvesting from a single flock makes a huge difference of standard market cross contamination practices regarding bacterial growth) Allowing rigor to pass is one key but also a little cellular breakdown for lack of a better term really helps tenderize the meat.. (dry aging beef for example). If you are much faster than I and can get the bird in the pot before rigor sets in.. acceptable results have been reported.. Cooked at the wrong time.. there is NO saving the toughness of the bird with any method.
Younger (more tender) birds and birds that will never reach a "roaster" size or the lighter breeds like leghorn are sometimes harvested as "fryers". For ME.. it often comes down to convenience either of time or freezer space as to when or WHO I harvest, sometimes flock antics determine who MUST go.. so age and such might get labeled on the package,, since most my birds are heritage breeds.. it's also key to me NOT to harvest during any mini molt period as pin feathers are a time consuming pain to pluck. I have skinned birds before when needed but prefer plucked. Different breeds or individuals can sport these at different timing. A decent read..
https://www.peninsulapoultrybreeders.com/cooking.html
With what ya got going on.. you won't have a lot of consistency in offspring or carcass size.. breast verses thigh qualities.. and levels of fat etc.. you just get what you get.. and that's okay if YOU are okay with it! You are the ONLY limiting factor in THIS scenario. Wrapping your head around what you will and won't allow to be harvested. Some ladies get harvested if their time has come.. Euthanasia is kindness. NO reason to let anyone die slowly or waste their contribution.
For eating, are your bird breeds ideal.. maybe not.. but suitable.. 100% yes!
So your two flock might not go back together since you separated them.. or you might work to reintegrate them.. OR come up with a plan be for the extra boys you may have now that haven't yet had scuffles with more dominant flock mates.. Some roosters have waited until 18+ months to start crowing while others have started trying at 3 weeks! All the breed you have should be showing pointy male saddle feathers starting by about 12 weeks..
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Happy chicken adventures!