Here is a view of the founders of the US -- I think maybe more objective than what one usually gets.  Every country seems to want to deify its founders.  The American Founding Fathers were, except for Franklin, white male aristocratic wealthy landowners (Franklin was probably America's first millionaire and was a self-made entrepreneur).  They were fairly spread over the political spectrum, from the extreme right (Hamilton) to the center right (Washington and Adams) to the extreme left (Paine and, slightly less extreme, Jefferson).  The actual constitution was written mainly by folk in Washington's camp, the Bill of Rights by folk in Jefferson's (Jefferson opposed the original Constitution).

They were of course all well educated gentlemen, with but a couple of exceptions not Christian but Deists, although except for Adams they didn't ever express much antipathy to Christianity in public.

Many of them owned slaves and to my knowledge only Adams ever expressed any dislike of this -- being from Massachusetts that would not be surprising.  Jefferson appears we now know from DNA evidence to have been a hypocrite on that subject, having had a slave woman for his mistress (this was about then but he adamantly denied it), and not freeing any of them until his death (such manumissions for slaves close to the master were common).

The political system they created was in my opinion not very good, and has not been among the reasons the US has been so successful.  Presidential systems are inherently subject to gridlock -- something that at one point led to the Civil War and which has always, except in a few periods of one-party rule (reconstruction), hindered American political action.  After the Founders passed, very few men of distinction made it up, and then by accident -- Lincoln, TR Roosevelt -- because the political election system and general franchise fosters non-intellectual and emotional and -- well politicians rather than statesmen.