Franklin probably was a Deist. Jefferson and Washington were both Anglican. Both served on the vestry of their parish. Adams came close to a deist; he was a Unitarian. I have no clue about Madison.
Jefferson attended church services in the rotunda of the capital. He did have problems with his faith after he left office and the death of his daughters.
In the late 1960's I was a minister at the Unitarian church in Quincy, Mass where Adams is buried. His faith was not Deist. He was a Christian who did not accept the 3 Gods interpretation of the Trinity. Unitarian thought in the late 18th and early 19th century was explicitly Christian. It has only been since the 60's of this century that the Unitarian Universalist Association began to define itself as other than Christian.