^^I agree with Margie about trying the Weruva if you haven't already. The human-style ones are packed with real meat (if that's what your pup likes the most and is picking out from the homecooked) and don't have very many veggies and no huge pieces...also check out TikiDog which is also high protein and lower on veggies...sorry if I'm repeating things you've already tried. But those brands both look like human food (shredded chicken, big flakes of fish etc.) and might work.
I don't think the BalanceIT Carnivore Blend is bad but it just seems to lack variety to me (I guess the supplement "balances" everything but it just seems weird to me to feed just straight up meat or eggs or whatever)...The carnivore recipes I've seen all seem like it's just the supplement and the main protein you select...so I personally prefer to use other recipes with the regular supplement to incorporate and variety of nutrients/vitamins from whole food sources. But that's just a personal preference and doesn't mean that it's not going to work for other people or worth checking out. I'm sorry you're having a difficult time with finding something that works
I tried feeding Toki the Honest Kitchen mix before and while she ate it, it seemed so low in protein and had a heavy plant/herby/smell as I recall. I really like the company and it's a high quality food but just didn't work for us. I think mimimomo feeds it or rotates with it so maybe she can offer some feedback on the varieties that her pups enjoy a lot.