I'm asking mainly because I was recently forced to read Samuel Moyn's "The Last Utopia" for a grad course. I'm interested to see if there have been any recent major works that have directly engaged with/challenged his (somewhat hostile) revisionist history of HR.
The most important historian who has directly challenged Samuel Moyns postmodernistic approach is probably Jonathan I. Israel, although he hasn't written a comprehensive history of human rights, but with his trilogy on the Radical Enlightenment and not least in connection to this subject, one volume on the French Revolution Revolutionary Ideas: The intellectual history of the French Revolution (published 2015), he has basically written the early history of human rights through the lense of his theory of the radical enlightenment.
Samuel Moyn criticised Israels work on the radical enlightenment in The Nation, and Israel responded on the History News Network.