I think that you seem to be confused about what constitutes a god and what constitutes a spiritual entity in these cosmologies. Christianity, Islam, and Judiasm all acknowledge the existence of other spiritual beings that have abilities, but they do not qualify as God or gods. Monotheism privileges God with many, many unique properties such as the creation of the world, omnipotence, omniscience, control of the future, etc. Please research the differences between monotheism and polytheism.