No one is arguing that the concept of the Trinity was not something that evolved over time. Nor is anyone arguing that Constantine did not see Christianity as a political tool and that that view is the biggest reason for the expansion and dominance that resulted.
If the vote was in favor of the concept of the Trinity even before Constantine stepped in, you cannot say that the Trinity concept was solely the result of an edict from Constantine.
Look at your other cites.
You say that at the Council of Constantinople "only Trinitarians were invited to attend."
That supports my position that there were also non-Trinitarian Christians.
Anyone so limited that they can only spell a word one way is severely handicapped!