Henotheism

I have always read the historical narrative portions of Nach as depicting a monolatrous culture with a polytheist minority evolving into a henotheist culture with a monolatrous minority, and eventually evolving into pure monotheism. The later strands of Torah are decidedly monotheistic, but that appears to be a retrojection; the earlier strands seem to be henotheistic, but in places they strike me as have been redacted toward henotheism from monolatrous. Though I freely confess that the latter is my own conjecture.