It's remarkable how similar the "caste system" of Swat is to the Potohar. Weavers here are called "Julahas". Land-owners and warriors are Rajputs, Awan and Gakkhars. Sesame oil farmers are called "Teli", which is also a derogatory term for a dark skinned person. A barber is called a "nai". Ministrels and singers are called "Dom-mirassi". Brick kiln workers are called mussali. All barbers, ministrels, weavers, mirassi etc are collectively known as "kammi", which means a low-borne, landless peasant. Another interesting thing about Potohar, everyone except a Rajput, Gakhar, Khattar, Awan, Mughal and Syed is collectively labelled "jatt", despite there being some proper Jatt clans like Cheemas and Chatthas living there. Even a nai is labelled a "jatt" here.
And you might be right about miscellaneous races claiming to be Yousafzais. Similar things can be seen quite often here. A lot of miscellaneous people from Potohar claim to be Awans or Janjuhas, despite not being such. For some reason they never claim a Gakhar origin. The Jhelum settlement report mentioned that a lot of Arayeens from Jhelum and Chakwal districts gave their clan(called "biraderi") as Janjuha rajput or Awan to the British authorities. You'll be surprised how low some people can get.