What are the least controversial doctrines in Christianity?

Which set of doctrines is accepted and believed by the vast majority of Christians? To get started, I think the doctrine "God exists" must surely be the least controversial of all. **Note**: This is essentially the polar opposite to my recently asked (and closed) question https://christianity.stackexchange.com/q/86318/50422 **EDIT**: a probably more on-topic polar opposite question: https://christianity.stackexchange.com/q/86324/50422