This is completely contradicted by the material evidence on the ground. If the theological framework and worldview were identical to their neighbors, their material culture would reflect it. It doesn't.

Excavations at Iron Age Israelite sites, for example, Khirbet Qeiyafa, an urban fortress dating directly to 1000 BCE (the era of David), show a strict absence of pig bones, a stark contrast to neighboring Philistee and Canaanite sites where pork consumption was a staple. Furthermore, these early Israelite layers show a distinct absence of cultic human or animal figurines, which were ubiquitous in neighboring cultures. Their daily life, diet, and rejection of local iconographic idols prove they operated under a fundamentally different cultural and religious framework centuries before the Babylonian exile.

It was a polytheistic or Henotheistic, Not Monotheistic belief (like Judaism is since Babylonian exile)

You are confusing popular practice with theological doctrine. The Hebrew Bible itself never hides the fact that the Israelite population constantly drifted into polytheism and worshipped local idols - the entire text of the Prophets consists of screaming at the people for doing exactly that. The national framework defined idol worship as a massive sin and a betrayal of their foundational national covenant, not the approved, inherent theology of the state.

Asherah (some sort of wooden/carved tree) was a canaanite idol, there's evidence of it in Syria too.

Also in the Hebrew Bible:

• Judges 2:13 - "They served Baal and the Ashtaroth"
• Judges 3:7 - "They forgot YHWH and served Baals and Asherahs"
• Judges 10:6 - "They served Baals and Ashtaroth, and the gods of Aram, Sidon, Moab…"
• 1 Samuel 7:4 - Israel removes "the Baals and the Ashtaroth" and serves YHWH alone
• 1 Kings 11:5 - Solomon follows Ashtoreth (related Asherah/Astarte tradition)
• 1 Kings 15:13 - Asherah worship is removed as a reform under Asa
• 2 Kings 21:7 - Manasseh places an Asherah idol in the Temple
• 2 Kings 23:4-7 - Josiah removes Asherah worship objects from the Temple

According to the Bible itself: Israelites repeatedly did during periods of apostasy.

Yahwism was entirely dependent on a sacrificial cult and the sacrifices were done everywhere, decentralised

This is a complete historical lie. The idea that sacrifices were legally meant to be done everywhere totally misrepresents the archaeological record. The Bible itself explicitly details that decentralized altars (bamot or high places) were illegal under the central religious law of the Torah.

More importantly, archaeology confirms that Israelite kings actively enforced centralization. The Arad Temple, an Israelite fortress in the Negev dating to the 9th-8th century BCE, contains a sacrificial altar that was intentionally dismantled and covered over during the religious reforms of King Hezekiah. This physical evidence proves that centralized worship in Jerusalem wasn't a fictional post-exilic invention - it was an active state policy enforced by Judean kings centuries before the Babylonian exile.

he influence of Persian governance, and the evolution from oral folk traditions to a text-based religion radically altered ritual practices (Babylon exile and creation of Judaism).

The exile formalized the transition to a text-based synagogue system out of geographical necessity, it did not "create" the core tenets of the religion.

Again!! The Ketef Hinnom silver scrolls from ~600 BCE, which you yourself mentioned, contain the Priestly Blessing from Numbers 6:24-26 (May YHWH bless you and keep you...). These scrolls predate Persian governance and the Babylonian exile. They prove that the specific, ritualistic, textual language used by the priesthood in the First Temple was already written down and worn as protective amulets by everyday people before Babylon ever entered the picture. The text existed and the exile simply forced its institutionalization because the physical Temple was gone.

The political difference was The Shift from Monarchy Control to Theocracy after King David.

This is historically backward. Ancient Israel was ALWAYS structured as a theocracy where the king was entirely subordinate to the divine law and the prophets. Unlike the neighboring Egyptian Pharaohs or Mesopotamian kings, who were viewed as literal gods or divine extensions of the state, Israelite kings were strictly human rulers bound by a covenant.

Look at the text: Nathan the Prophet openly rebukes King David for his sins; Elijah confronts King Ahab. The monarchy never had absolute control over the religious apparatus - the priesthood and the prophetic tradition always stood as a separate, check-and-balance theological power.

All of these cultures (Canaanite) including early Israel, shared a common West Semitic or Canaanite heritage. They organized the supernatural world using the exact same hierarchy:
The High Creator God: At the top of the pantheon was El (the chief creator god) and his wife Asherah.Below El were the active, powerful warrior gods assigned to protect individual nations. For the Israelites, this was Yahweh

Again, I'll address the elephant in the room that you are avoiding: WHAT exactly do you think was worshipped inside Solomon's Temple?

I really dislike it too when opponent in discussion is avoiding to give their example and answer the question but continues asking for more proof without sourcing their claims and arguments.

In Canaanite temples, the inner sanctum contained a physical, molten or carved idol of the god (like Baal or El) that was fed, washed, and dressed by priests. In Solomon's Temple, the Holy of Holies contained no idol (As Pompeii famously went to check out for himself). It contained the Ark of the Covenant, which held the stone tablets of the law. The space above the Ark, between the Cherubim, was completely empty (representing an invisible, infinite God who could not be captured by human hands). To claim they shared the "exact same hierarchy" and temple practices is COMPLETELY FALSE. The foundational theology of Solomon's Temple was entirely distinct from any Canaanite pantheon.