I just think saying Studio Ghibli and Team Ico is largely redundant is all. Since TO was so heavily incluenced by Ghibli already in the first place.
Besides which I'd also argue the visuals take as much or maybe even more from previous Zelda games like The Wind Waker, Twilight Princess or Skyward Sword as they do Ico and SOTC. It's circular too though as you can also see a bit of OOT (among other games like Vagrant Story) in Team Ico's games too. Everyone pulls from everyone.
Besides which I'd also argue the visuals take as much or maybe even more from previous Zelda games like The Wind Waker, Twilight Princess or Skyward Sword as they do Ico and SOTC. It's circular too though as you can also see a bit of OOT (among other games like Vagrant Story) in Team Ico's games too. Everyone pulls from everyone.