I think you are missing something by eliminating verses that contain the qualifiers along the lines of "there are no gods like me." I think these are very strong statements for God being the only living god.

What you seem to be saying is that a statement like this is comparative in nature, i.e. "No god is like me in what I am able to do" or "No god is as great as I am." I would posit that God is actually talking about his nature in statements like these. So what God is saying is more along the lines of "No god is of the same nature as I am." In other words, no other gods exist.

That being said, to specifically answer your question, I would say Deuteronomy 6:4 is a strong statement for God being the one true god:

"Hear, O Israel: The Lord our God, the Lord is one." (NIV) The footnotes in multiple translations note that this could also be translated as "The Lord is our God, the Lord alone"

I think you are missing something by eliminating verses that contain the qualifiers along the lines of "there are no gods like me." I think these are very strong statements for God being the only living god.

What you seem to be saying is that a statement like this is comparative in nature, i.e. "No god is like me in what I am able to do" or "No god is as great as I am." I would posit that God is actually talking about his nature in statements like these. So what God is saying is more along the lines of "No god is of the same nature as I am." In other words, no other gods exist.

That being said, to specifically answer your question, I would say Deuteronomy 6:4 is a strong statement for God being the one true god:

Hear, O Israel: The Lord our God, the Lord is one. (NIV)

The footnotes in multiple translations note that this could also be translated as

The Lord is our God, the Lord alone