> Under Jobs during the early days they never sold many products at once.
Depends on how early you go. The II+ was a straightforward upgrade to the ][ that replaced it, but the IIe was sold alongside the II+ for a long time. And then it refused to disappear while they sold the IIc and then IIgs. And don't forget the not-quite-part-of-the-family Apple III!
Up through the early 80's they had a clean lineup. After that there were as many as four different variants on the Apple II in the market at a time.
There was the old Apple II and new Apple II. Seeing as they went past 6 revisions of Apple II there was considerable churn.
There was never much of a 1st party peripheral market. Like we see with iWatch. That nearly exclusively 3rd party.