A substantial chunk of a July 2023 review in Science Fiction Studies for the book After Engulfment: Cosmicism and Neocosmicism in H.P. Lovecraft, Philip K. Dick, Robert A. Heinlein, and Frank Herbert (2022). The rest of the review is behind the Project MUSE paywall. Amazon UK has no reviews, and this is the first I’ve seen or can find. But note there’s now a Kindle ebook edition, which means you can get the first 10% of the book on a Kindle as a free sample.
Also looking at Lovecraft from a theoretical angle, a short article on “H.P. Lovecraft and Hubert Fichte” with some interesting things to say about bodies and flows.