Though now that I think about it, I'm not sure if DuckTales qualifies. It's an 80's cartoon, but looking back it wasn't on Saturday Morning. Nor did Inspector Gadget (which moved to nick in 1987). Nor Chip and Dale Rescue Rangers.
And many could say that Nick was one of the contributing factors to the fall of Saturday Morning Cartoons. Although the FCC can be blamed there.
--
See You In Another Life, Brother.