Suppose there are multiple universes and one God for this universe; is there only one God for all the universes?

Suppose that non-theistic life in the universes can not find out any information about any other universe. Would the God be able to gather information from other universes or not, in your opinion?

Why would the God have multiple universes? If there were multiple Gods, would they communicate with each other? What information would they share? Why would they share information yet not let their intelligent life forms gather information from other universes?