Akira is not as iconoclastic in its philosophy as it was in its technical and artistic attributes at the time. It was also heavily influenced by and can be seen as a modern-day retelling/rewarning of the hiroshima/nagasaki incidents.
NGE can be philosophically heavy at times but is too diluted by its action sequences and fan service moments.
The first GITS movie is a philosophical tour de force and a piece of art that transcends time. A masterpiece.