I know you were directing this question at Dr. J (I want to see his answer as well), however, I’m currently in the research phase of a syntopical term paper covering the Scottish Enlightenment. I found a quote about the History of England quoting Hume himself on the matter in “Rousseau’s Dog: Two Great Thinkers at War in the Age of Enlightenment”.
“Hume congratulated himself on arriving at a balance between both interpretations. [Whig and Tory] “My views of things are more conformable to Whig principles; my representations of persons to Troy prejudices.” But as Hume also understood, his readers were more influenced by his character studies, and so saw him as writing from a Tory viewpoint. “Nothing can so much prove that men commonly regard more persons than things, as to find that I am commonly numbered among the Tories.” (Edmonds pg 24)
In Western Civilization to 1500 the lecture 13 The Enlightenment, Part 1 has a link in the references to a Dr. Livingston talk/lecture where he actually covers this aspect. It’s a pretty decent video and the site has a breakdown to quickly find different aspects: Hume’s Histories are listed and there are further remarks.