All in all, ʿUṯmān Ṭaha is very close to the style of the Amiriyya = a simple Ottoman style.
In a German text I focus on orthography, giving most attention to the Maghrebian-Arab and to the Pakistani-Indian ones
and consequently on the new Arab calligraphic style and the new Pakistani-Indian one. Of course, I display examples from Morocco, from the Sudān, from Russia-Tartaristan as well -- and the earlier Indian style from Lucknow plus example from Punjab, from Bengal and Kerala.
I show many examples from Turkey and the Mašriq, but from Iran, I show mainly Nastaʿliq ones.
Here you see the normal Persian "qur'anic" style, taken from old maṣāḥif, all recently reproduced.
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although written by three different (famous) writers, they are similar.
Note in the bottom right, that (like sometimes in India) wa is separated from the word to which it "belongs", something forbidden in Arabic.
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Here two more examples of wrong wa- at the end of a line. I find the first example shocking because the silent alif-waṣl is separated from its vowel /a/.
Fist images from four Iranian ʿUṯmān Ṭāhā editions:
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Here a more traditional print: 604 pages, a Persan style close to ʿUṯmān Ṭāhā, mostly with the Persian help signs:
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