I wonder, doesn’t it give you any pause for thought that scholars who are not tied to any theological position tend to interpret NT Christology in a way that is closer to JW understanding than Trinitarian dogma?
As it is, you have Trinitarian scholars who generally argue that the Bible at least doesn’t fundamentally contradict Trinitarian dogma. If JWs quote those scholars on particular points where they agree with JWs, you say that’s illegitimate because those scholars don’t agree with JWs overall.
If JWs quote non-Trinitarians to make a point then you say that’s illegitimate because of course non-Trinitarians are going to agree with JWs.
And if JWs quote liberal scholars, who don’t have a faith commitment, you say that’s illegitimate because of course liberal scholars say the Trinity developed after the Bible, that’s because they are non believers.
So ultimately JWs can’t quote anyone, whether they agree with them on a particular point or not, none of it should be considered.
In reality the conclusions of liberal scholars are interesting because they are not committed to a particular theological outcome. When they say that the NT says that Jesus was God’s first creation and a powerful angel that’s because their historical work has led them to that conclusion. Practically every scholar I can think of who has examined the NT without a prior commitment to the Trinity has concluded that the Trinity developed after the NT was written, and that Jesus is distinct and subordinate to God in the NT, because that’s what a plain reading of the texts suggests.