I read The Hobbit and Lord of the Rings as a teenager and liked them, but I don't consider myself a massive Tolkien nerd and am not interested in encyclopaedic details about Middle Earth, syntax of the languages, long family trees, etc. (I actually liked Chronicles of Narnia better.) I do enjoy classics and folklore-based works very much.
I saw that many newer standalone books by Tolkien have been posthumously published, such as Fall of Gondolin, Beren and Luthien, Fall of Numenor (upcoming in 2022), etc. If you have read these, which ones do you recommend? I'm looking for strong plots and memorable characters, not books that just flesh out Tolkien's world by adding lots of details or relatively unimportant backstories to satisfy a reader who is obsessed with finding out every possible detail about Middle Earth. Thank you!