Request to enable: Hindko
Note that [hno] (Northern Hindko) is for Hazara Hindko (also called Kagani or Kaghani), whereas [hnd] (Southern Hindko) is grouping the four dialects of Attock, Kohat, Central Peshawar and Rural Peshawar (distinguished in Glottolog and the Linguist List, but not in ISO 639).
Both use the same Arabic script, and if they seem to be written the same, that's probably because of minor phonologic differences, and the written form in Arabic may not mark these differences explicitly with diacritics for actual vowels or voewl qualities, or alterations of consonants. The difference may be more evident in the spoken language.
The current autonyms written in Arabic script also still does not show these distinctions between [hno] and [hnd]; as well Hindko languages seem to form a continuum, both being part of the Lahnda macrolanguage (in its Northeastern branch according to Glottolog) in ISO 639, that macrolanguage also covering the more distant Khetrani (actually a Sindhic language), also written with the Arabic script.