In Isaiah 44:6 God says: "I am the first, and I am the last, and beside me there is no God."
In vs. 8: "Is there a God beside me? yea, there is no God, I know not any."
The Gods you mentioned in the Bible are all false Gods. They are called by their names as the people named them so they would know that The God knows all about it. The prophet Isaiah was charged by God to deliver this message to the people as a warning of worshiping false Gods.