There has been no Bush of any consequence for over 13 years, so...
What dynasty?
And none of the Bush office-holders left anything that can be called ‘significant’, other than perhaps responding to the Taliban, but then, any president would have had to respond for the 9/11 attacks.
What we observe? Realignment along lines of Nationalists and Internationalists.
George H.W. Bush was an internationalist and head of CIA before president after Reagan.
He got better press than he deserved.
George W. Bush had nice guy Texan persona, and was pretty well liked in office.
Jeb was phony, fake, clueless.
George P. is product of his dad.