Hey, thanks for shearing what you've found. I was actually also looking where those images came from but couldn't find anything because the quality of those I found were just even worse. Yours are literally 4k compared to that.
By (more or less) "analyzing" the big title on the first page, I came across a website called TuneGate (
https://tunegate.me/P20180205002) where you can find everything listed on your first image again but this time it's embedded on the website so you can use Google or Deepl to translate it. But you can find the real treasure, if you scroll down a bit, until you come to this part:
It turns out that this "Sound Designer" is a magazine form february 2018, featuring exclusive content about Hiroyuki Sawano and how he made the AOT tracks. A few clicks later and I've probably found the highest quality copies of those images we've encountered so far:
These are all screenshots from the sample you can read on amazon. If you want to take a look yourself or even buy it, here is the amazon link:
https://www.amazon.co.jp/SOUND-DESIGNER-サウンドデザイナー-2018年2月号-2018-01-09-ebook/dp/B07C7KPR94