I agree with many of your selections emmy, and it's hard to choose the top ten

Grave of the Fireflies was a total experience for me, so sad yet so damn beautiful!

I think the late and brilliant Roger Ebert summed it up so nicely The Grave of The Fireflies

I do cry often when I watch The Grave of The Fireflies.

Howl's moving Castle was outstanding, how it was so hard to leave this off my list, then I watch Ponyo, then I deliberate if this post could have more about been about Studio Ghible! It's hard to top them!