Lol at OP deleting his own comments after realizing how retarded he sounded. At first he said Mahmud of Ghazni defeated Muhammad of Ghaur's father, named "Amir Suri" not realizing that the Ghauri and Mahmud predated each other by around 200 years lol. Maybe Muhammad Ghauri was 200 years old according to whatever rasaala he read.
As for Hindkowans, well people of southern Hazara are no different than Potoharis. The chief family of Haripur, commonly known as "Zaman family" is of Gakhar stock and owned almost 80%+ of land in Haripur before Ayub Khan took over a lot of their land citing land reforms. The Haripur Gakhar family is the spiritual royal family of Gakhars. I don't know if Gakhars were always native to Haripur or if they migrated there after Mughal collapse. They defeated Yousafzai incursions there under their last independent and almost unstoppable Gakhar chief, Sultan Muqarrab. The rest of Southern Hazara natives and landowners, Dhund Abbassi and Karlals are also Potohari and are found in Murree and Rawalpindi too. In Hazara, they're found all over the margalla hills region and southern Abbottabad. As for the other Hindkowans like Tanoli, they're not generally considered Pakhtuns and don't look like them either. Their learned men claim descent from a Mughal general of Babur, but some Afghani wikipedia and twitterati try to give them lodhi or ghilzai origin all the time. The only truly Pashtun origin Hazarewal are the Tareens, Chachis and maybe Jadoons. About the Chachis of Attock, they only moved in 100 years ago as economic migrants during the British raj. They're said to have come from Kandahar etc. The ruling family of Chach, nonetheless are the Malik Awans of Shamsabad. Malik Awan is the highest caste in Attock along with Gheba and Khattar.
As for Peshawar, one there are no Kianis(Gakhar) there. Second, Peshawar was always a Hindko majority city and the eastern regions of Peshawar district are still Hindko dominated. The Pashto speakers formed the majority after Afghan invasion, when literally millions of illegal immigrants poured in and got Pakistani citizenships via bribery.