There's no real incentive for the industry to coalesce around 2-3 models. I think it's very unlikely to happen.
Except for the 'vibe' of some of the models with their writing or testing style I am not certain I could tell you which model is which unless asked.
Switching from model to model at the moment has been seamless without extensive 1 to 1 bench-marking but most of my tasks are never 1 to 1.