Projects like the iMac were already underway before jobs returned under the wings of Amelio. In the same way the whole focus on education and the simplification to 4 computer types was later attributed to Jobs once Gil was out.
That said, there was 10 month between Gil being ousted and the iMac being revieled so there was plenty of time for Jobs to put the finishing touches on that one could argue was what a lot of Apple products really needed at that time. But I suspect under Gil it would have been called something stupid like 'Machintosh for internet - 7400E'.