In Pakpattan district where most of them are, they are Jatts. It's confusing for many of these Bar tribes, as some of them are called Jatts others Rajputs. Now many of them only identify with their clan e.g Kharrals of Pakpattan/Sahiwal only identify
as Kharral and not Jat or Rajput.
Interesting thing about these Bar tribes is that they were nomadic or pastoral until the 19th century when most of the forested regions of the Bar were cleared by the British.
I think they are the original Sindhi Jats as described in the Chachnama as the population of Sindh was described as mostly made up of Buddhist Jatts or Meds who were nomadic/pastoral. Their clans are usually only Muslim exclusive as well (like Sial, Wattoo, Dogar etc.)
+1 These bar tribes are most likely related to Buddhist nomadic pastoral Sindh jats described by Chinese traveller. There are many reasons to believe that
1. Bar tribes kharrals, watto, sials, fatianas, wasirs etc were nomadic pastoral till 19th century, being rajput and nomadic pastoral are oxymoron.
2. Rajput is title developed in hindi belt and all of their kingdoms were located there. Real rajputs in punjab, potohar etc likely have blood relations with rajputs of rajasthan/delhi/haryana. Khokhars, bhattis, janjuas etc Even though bhattis zamindar in Hafizabad now identify as jatts.
3. Till 19th century British described them as muhamadan jats and even in famous stories of Heer Ranjha and Mirza Jatt.
4. According to British gazetteer muhamadan jat tribes of predatory nature like Kharrals coming from south displaced hindus from their lands in Gujranwala region in 16-17th century.
5. They were bhuddists and converted to Islam and that's why we don't see their hindu/sikh counter parts unlike pretty much all rajputs or many other muslim jatt tribes who have origins in Gujranwala, Sialkot, Lahore region.
Most likely what happened is that after settling down some started to adopt rajput title, others continued with jatt. All these tribes in central punjab identify as mostly jatts and likely those in south punjab identify as rajputs or with their own tribe. Even if they are not same jats as that of Sindh in 7th century which is possibility, they are not rajputs either.