It is pointless to try and figure out a single name for God. I'm on the edge of agnostic/atheism and even to me, it seems pointless. There are many ways to think nabout this. If you really think there is only one God, then you have to think that god has many names.
The list goes on and on for a while honestly. Technically the name most Catholic religions and catholic branching religions gave their god, is God. That is why the "G" Is capitalized.