Is animism ancestral?

In discussions in the evolution of religion, animism is considered the “basalmost” position while monotheism is exalted as the apex. Naturally, this is has an obvious western bias and does not reflect the truth; for example, the hunter-gatherer Adamanese are monotheistic (they solely acknowledge Pūluga, though they don’t worship him) while Shinto, the national religion of Japan, is deeply animistic. Many Native American and Ocenian religions do not personify nature but revere ancestor spirits, so the idea that humans first personified natural phenomena is not necessarily the truth. And of course all these cultures have evolved for thousands of years, so their current itterations may not accurately demonstrate the origins of religion.

For my speculative world Lemuria, I played around a little, with an ambiguous animistic or even atheistic past succeeded by polytheism succeeded by the arrival of Indian and Abrahamic religions.