Is there a work that gives a good overview of the different models of how Christianity could have started?

Genesis and Exodus use the term "Pharaoh" as if it's a proper name, while also referring to the "King of Egypt." Ezekiel refers to "Pharaoh King of Egypt," again like 'Pharaoh' is the name, and 'King' is his title. Same in 1 Kings 3:1 and 1 Kings 9:16. What's going on here?

I wanted to know if you could speculate on the logistical process of how Pau's letters could have been assembled and collected.

Does the Greek style of the NT indicate a first century origin?

Does it matter if religious experiences are based on fictive deities?

Were any of the towns Jesus said to have visited real?

Why did the Catholics decide to make Peter the first pope?

So what will heaven really be like?