Celebrated WT scholars are not in the business of advocating any Babylonian chronology or any list of regnal years for the currently known Babylonian monarchs or kings. That is the businessof other scholars.
WT 'scholars' are not in the business of advocating any facts that disagree with their flawed doctrines. "The business of other scholars"? Don't you mean the business of "real" scholars?
Such a project is fraught with danger because biblical chronology proves that there is a twenty year gap when the two chronologies are compared.
No, Watchtower Society chronology (not 'biblical chronology') alleges (not 'proves') that a twenty-year gap exists. As a sidepoint, trying to use the twenty-year gap as a defense for the Society's interpretations is an absolute joke.
The seventy years mentioned in the Bible in connection with Jerusalem, its people and the land of Judah are not limited to a period of Babylonian domination or servitude as the Jonsson hypothesis attempts to argue. The evidence is simply not there because the relevant texts clearly refer to a period of servitude-exile and desolation.
What about the 70 "forgotten" years of Tyre? What about the 70 years in connection with the other nations (Egypt, Uz, the Philistines, Ashkelon, Gaza, Ekron, Ashdod, Edom, Moab, Ammon, Sidon, “the region of the sea”, Dedan, Tema, Buz, “those with hair clipped at the temples”, the Arabs, “the mixed company who are residing in the wilderness”, Zimri, Elam and the Medes) to which Jeremiah applied the 70 years? (Jeremiah 25:9-11,17-26) It is quite clear that the 70 years to which Jeremiah referred were of Babylon's dominance (as admitted by the Society in the Isaiah's Prophecy publication on page 253).