Jobs worked on NeXT and Jean-Louis Gassée was working on Be. Gassée had brought the world the Macintosh Portable and the IIfx, and he started the Newton project which had the effect of keep ARM alive.

When Gassée left Apple, he took many of Apple's best with him. If we want to know what Apple would have looked like under Gassée, I think it's easier to look at how many products he killed. Much of Apple's leadership was trying to force budget computers like the PC industry was building. Gassée would have none of it. He was focused on exceptionally good hardware married to exceptionally good software, knew the handheld devices would be vital in the future, but he didn't like boring things. I imagine that Apple built around Be would have delivered many of the same things, but wouldn't have become just plain brushed aluminum everywhere.

The curious part would have been the OS. BeOS and NeXT are wildly different.