I'll likely buy hatchery birds, and this sounds like the best way to go! I know all birds are individuals, but getting several of each breed of interest would give me a lot of chicken dinners and a good idea of what I'm really looking for. And it would satisfy my desire to have a yard full of different chickens just once at least.
I'm gonna go out on limb here.. and suggest Wyandotte as a breed to consider for being dual purpose, fast growing and excellent tasting cockerels

, with plenty of genetic specimens available and SOO many amazing looking varieties! Rose comb is still cold hardy, lay a fair amount of eggs and JUST broody enough IF YOU select accordingly. Oh and did I say HARDY??? Long lived, calm.. gee, the list goes on and on..
But one giant truth.. is nothing is ever the same in person as it is on paper.. and you already got down the individual thing both person and chicken wise.
For me.. Orps are WAY too slow for food. Swedish flower were meh, and not nearly as hardy as what I expected for being touted as land race.
Rock and EE, I tend to love. SS are beautiful but were hit and miss for me.
Marans, were fairly acceptable dp birds.. with good personalities.. My favorite rooster yet. I love straight combs. I think I might not prefer feathered shanks or feet though I never experienced ANY hardiness issues despite living in the PNW and free range on wet pasture EVEN for Silkies... which BTW, are perfectly edible too!
Ameraucana are fantastic birds, I have had a giant boy so big wouldn't fit in my cone named High Tower. Pick a breed you like and select for qualities YOU desire. I find the beard to be a drawback for open water dishes or wet feeding.
Leghorn and White faced black Spanish were really fun birds but not a good recommendation for your set up. Even though not DP, they're still perfectly good on the table.. and come to find out.. these are the ones that they like to use as "fryer".. harvest youngish since they won't get too much bigger anyways.. If you're raising what YOU truly love then maybe it's okay to get a little less meat, especially if it means more eggs?? You do YOU!
Any of the birds we are talking about will be MUCH different than the chicken carcasses found in the market.. which are often injected with brine and being Cornish Cross are very young meaning.. tender and soft or aka flavorless and mushy... which I suspect you already know, but including the following link in case you didn't know they will also cook differently according to what age you harvest, but it will also vary according to breed..
https://www.peninsulapoultrybreeders.com/cooking.html
Bielefelder, I currently keep.. I almost can't say enough good things about them. Growth rate was very acceptable meat wise. They're beautiful, auto sexing, good foragers, calm demeanor.. Waiting to see if they're slow maturing to lay or if I have nest hiders.. which I do, but not for long. Thus far I'm unimpressed with egg production quantity, but the size and quality are good.
Including all my print comparison tables for many of the breeds that exist..
Chicken Chart
pickachicken
Breeds of Chickens
Sorry, my thought are very rarely in order so one more that I saw mentioned.. Turken.. also very good birds.. surprisingly cold hardy. Ugly as ever and yet so cool.. I mean their head doesn't look anything like a turkey or change from blue to red and white.. but still good eats and personalities! I was just wondering why they were making me think about Las Vegas.. then it dawned on me.. Showgirls, LOL!
From google..