Haven't watched the other miyazaki movies so I'm not the person to recommend them.
And Rebecca is very obviously not a child. She's just short. She literally gave a dude a blow job barely off screen no way would that shit fly if she was a minor. Lol.
I find that if you want good anime recommendations, the recommendation must come from someone that doesn't like anime. Anime fans tend to be really out of touch with certain baselines... like not being an open pervert.(I've seen that hentai hoodie, don't lie.) Also people who don't like anime can distinguish between "good for an anime" and "good".
So I offer mine: Cyberpunk Edgerunners and Spirited Away.
There are thousands of backups of wikipedia, and you can download the entire thing legally, for free.
He'll never be rid of it.
Wikipedia may even outlive humanity, ever so slightly.