A "chance"? Maybe, but would there be anything to gain from such uniformity? Big CPUs are made by big teams, just like software. And you try to maximize re-use

A "chance"? Maybe, but would there be anything to gain from such uniformity? Big CPUs are made by big teams, just like software. And you try to maximize re-use of vetted recipes, i.e. no need to reinvent power management. I would assume that for specialty backstage processors the core that the specialist team already knows is the one that gets used. Even if the backstage is disclosed, no code will ever be shared between the main cores and the support cores.