What is the fine-grained topic of the following text: The most concise reference point that occurs to me, though—Notley, Robertson, and Harryman notwithstanding—is that Waldrep is the closest American poetry comes to Geoffrey Hill, in the music of his language, the range of his erudition, the integrity of his intellect, and the honesty of his doubt. Only return the topic.
Comparing American poet Waldrep to Geoffrey Hill