George H.W. Bush spawned George W. Bush. Joseph Biden spawned Hunter Biden. Both sons became painters. Both families became incredibly wealthy while in government service. The families has many other things in common.
The Bushes had money before going into politics. The sons probably got introductions and opportunities because they were president's kids, but it was nothing so naked as the Bidens' influence peddling.
GHWB did pretty well in oil, as I recall.