John Witherspoon, a signatory of the Declaration of Independence, was a devout Presbyterian minister.
The Committees of Correspondence, headed by Samuel Adams, were famous for the rallying cry: "No King but King Jesus." (Reportedly, at the battle of Lexington, when Major Pitcairn famously enjoined the rebels "in the Name of King George the Sovereign of England" to "Disperse, ye villains, ye villains, disperse! Why don't ye lay down your arms?" John Hancock and John Adams responded, "We recognize no Sovereign but God and no King but Jesus!"
Jonathan Trumbull, a crown-appointed governor, wrote: "If you ask an American, who is his master? He will tell you he has none, nor any governor but Jesus Christ."
The men of Marlborough, Massachusetts unanimously declared in 1773: "Death is more eligible than slavery, a free-born people are not required by the religion of Jesus Christ to submit to tyranny, but may make use of such power as God has given them to recover and support their laws and liberties . . ."
Samuel Adams wrote: "We have this day restored the Sovereign to whom all men ought to be obedient. He reigns in heaven and from the rising to the setting of the sun, let His kingdom come." Definitely not a Deist thing to say.
Benjamin Rush, signer of the Declaration and Surgeon General of the Continental Army, wrote: "I have alternately been called an Aristocrat and a Democrat. I am neither. I am a Christocrat." He also said: "The only foundation for . . . a republic is to be laid in Religion. Without this there can be no virtue, there can be no liberty, and liberty is the object and life of all republican governments." In that era, "Religion" almost always meant "Christianity."
Patrick Henry wrote: "It cannot be emphasized too strongly or too often that this great nation was founded, not by religionists, but by Christians: not on religions, but on the Gospel of Jesus Christ."
Yes, there were very many Christians among the Founding Fathers. They weren't all Deists like Jefferson and Franklin nor all atheists like Thomas Paine.