Some examples you have shared speecially, the Kassa curve, can you please share if this is from a book? or where I can such details for other letters?
I never am able to read articles till the end, they usually either go out of context or plain…
Mustafa Pracha

I’m so glad you find the article useful :)

There is a very good booklet that mention the details of letters in Thuluth. You can download it from here (it is in Arabic)

Hope this help. And please let me know if that is not what you were looking for