Yeah if I understand correctly Allah is just a contraction of “Al Illah” which means “the god”.

I love the history of the emergence of monotheism, it was very gradual and often the one god had to cohabit with lesser deities for centuries before they fully took over. Interestingly, Yahweh was in competition for some time with other warrior storm gods, including Belial and Baal which were ultimately demonized to the highest degree to prevent them coming back.