The Fall of the House of Usher - Pretty good, but I still prefer Hill House. Was entertaining throughout but all the kid stories just felt like filler since they were just caricatures in pulp horror tales.
For Flanagan TV, I think Hill House is fantastic, Midnight Mass was mostly good but shat the end, and Usher is entertaining but shallow mostly and maybe a bit long.
Still need to see the "weak" ones that most people said skip with Bly Manor and The Midnight Club. If you include his film catalog I still think Hill House is his best work. Dr. Sleep was pretty good considering the source material is totally middling and he made a better film than the source. Rest are all pretty good/solid mostly.