This whole name objectification is where Buddha didn't use Brahman
Actually the Buddha did use Brahman a few times in a positive way. The one that easiest comes to mind is in the Samyutta Nikaya. Interestingly enough he refers to his Dharma as the way of Brahman, or the life seeking Brahman.
He also used it as a criticism of the dualist sects that tried to fix Brahman into a particular deity. He believed they had no authority for how they argued among one another about Brahman. His argumentation could easily be viewed as a vindication of Brahman as unconstructed.
One notes when reading the Buddha's criticisms of the Vedic elders, that the Brahman he criticized specifically was
their saying that Brahman resides in such a heaven, has such and such bodily limbs, and so on. He was arguing against making Brahman constructed.
You'll want to remember
@wizanda that the Buddha was an Indian from that culture and raised with it's beliefs/language. He can't really be exercised from this framework, and neither do his teachings as passed down to us do so. They establish this was the framework he taught in. He was an Indian- he believed in the Indian gods/Devas and Brahman.
I also think it can't be understated too much what Indian thought was prior to and after Buddhism and Jainism. They both influenced Indian thought on a broader scope.
Vedanta didn't always have a monistic understanding. The dualistic schools of Indian philosophy were the oldest, which isn't perhaps too surprising. Buddhism and Jainism both critiqued this dualism.
The Hebraic text removes the wife, doesn't mention the rest of the council by names, only has the ultimate authority as its God; that isn't henotheism where Canaanites or Hindus for example can select which deity they like the most.
Actually, the suggestion of henotheism comes with how the commandments are found worded in Exodus. If the Deuteronomists thought this needed no further clarification, they'd have simply let the commandment as worded stand- without adding the profession of monotheism in the summation of the law found in Deuteronomy.
Deuteronomy's author or authors made it a point to stress pure monotheism. The most the Exodus wording suggests is Yahweh as high god. It says only to have no other gods
before him, but the other evidence is that Exodus speaks of Yahweh with other gods in places.
Besides saying Yahweh punished the Elohim of the Egyptians- it asks who among the gods is like Yahweh?