I did not really enjoy a single one of them, castle in the sky was the best but it didn't make me want to watch the rest of his filmography.
I tried The Wind Rises (made in 2013), also found it terrible.
However, before those two films, I had seen several Studio Ghibli's earlier movies and found them pretty good. I thought Nausicaa of the Valley of the Wind (pre-Ghibli but the same group of people, with director Miyazaki) was absolutely amazing. So my impression is that their earlier films are much better than their newer works.
It's also possible that a lot of people wouldn't like movies you love.
That said, Castle in the Sky in particular is not only one of the best animations I ever watched, it's likely one of the best movies I ever watched.
It's not bad but it's a far cry from "these movies are all 110/100 and will literally change your life forever". I don't care for animes in the first place so idk, they might be that good compared to the rest of them