So, the volcanic drones' scaling during the Robot War is being disregarded?
Also, I agree that viltrumites do not get the same boosts Allen does. The story presents his adaptation or "evolution" as being something entirely unique to himself. This isn't to say that viltrumites do not get stronger after near death experiences, but it's not focused on as being an important facet of training, else wise Thragg would'vehad his children rip one another apart over and over again, with the weak dying off Great Purge style.
That brings me to Thragg himself, who someone elsewhere made a case for not being that much stronger in comparison to Battle Beast via rognarr scaling. The rognarr got the jump on him and immediately restrained him with no real fighting taking place. The later training scene doesn't show the full context of how Thragg planned it out. The other person viewed it as being a controlled environment, as he also wanted to keep his children in line by not having them get killed by a rognarr. It came down to his coddling Ursaal, but I disregarded such a through as I viewed it with Occum's Razor, or just that what we're shown is Thragg handedly taking one several rognarr as a demonstration. Thematically, he can handle them just fine. It's still fair to say that we didn't actually see a fait exchange between the rognarr and Thragg or Battle Beast prior to that, as Battle Beast was killing them when they were distracted/focused on Thragg.
Mohawk Universe Conquest is presented as being like the main Conquest, but by the very nature of his existence, and how tentative the state of Mark vs his varients is (Mohawk was QUICKLY taken out with one ear slam and that dude easily killed Sinister with one a few blows), I would be apprehensive to say he isn't weaker than the Conquest our Mark fought.
All of rhat is to say that Allen is way stronger than Mark and Nolan, who were comparable until Eve boosted Mark. Tech Jacket is never made out to be high level viltrumite, and so Nolan should absolutely be above him. Vault is way more prevalent than I thought, and I don't like not knowing things.