I don't know, I don't think Evangelicals have many differences from Catholics. They certainly believe their clerics mediate with God and channel divine 'authority'. My reading of Reformation history so far is that the key was Protestants accusing Catholic clergy of sodomy—Luther's regular charge. That really made the sale, not theological differences.

I suspect the deeper motive was practical, and that Protestantism was touched off by the discovery (by Europeans) of the Americas. In view of leaving Europe they needed an independent, portable religiosity that was optimized for invasion and colonization.

Evangelicalism was a refinement. It involved picking through all biblical literature for a few words, phrases and scenes that could be read as sexual rules and controls. As with the Protestant masturbation fixation, Evangelicals would train the human from an early age to feel controlled and surveilled. The marriage & reproduction agenda was an effort to populate the continent and leverage the New World population against the Old World.

Evangelical replaced the Catholic use of cathedrals, confession, Eucharist and other priestly theater with sex, sex, sex. All the talk of grace vs. law, etc etc., is pure theater.