The ruler of Kashmir in 1530 should be Mirza Muhammad Haidar Doghlat of Yarkand. Just saying!
Lets not have over-simplistic misleading facts. A little history lesson:
In October/November 1531 Kamran, second son of Babur attacked Kashmir but was defeated by Kashmir under current Kashmiri ruler Muhammad Shah (it was his fourth reign 1530-37). Hardly when Kashmir recovered from it, Sultan Said Khan of Kashghar attacked Kashmir under leadership of Mirza Haider Daughlat in autumn of 1932 and brought under him - 28th Feb 1533.
Mirza Ali Tighai (another military leader of Said Khan who accompanied Mirza Haider in Kashmir) jealous of Mirza Haider's success revolted against him and Mirza Haider had to make peace with Maliks of Kashmir. Left Kashmir on 15th May 1533 in utter disappointment.
The utter massacre caused by Kashgharis on Kashmiris population followed by famine in Kashmir in 1534 breaks it into utter chaos. Worse after death of Muhammad Shah in 1537. Kashmiri civil war lasting till 1540.
After Mirza Ali Tighai's rebel against Mirza Haider and following death of Sultan Said Khan of Kashghar in 1533, his relation with Abdurashid Khan, son of Said Khan (whom he had dedicated his work "Tarikish-i-Rashisi) bittered and had to flee Kashghar forever and took shelter under Humayun, son of Babur, the Mughals.
When Humayun was defeated in 1540 by forces of Sher-Shah he too was on the defeated side. Seeing vacuum in Kashmir asked for some men from Humayun, attacked Kashmir and won over it.
Haidar installed Nazuk Shah, son of Fath Shah (Rein over Kashmir 1487-99 and again 1505-16) as sultan from the Sayyid faction.
In 1546 when Humayun recovered Kabul, Mirza removed Nazuk Shah and started ruling over Kashmir in the name of Mughal Emperor. Had coins minted in the name of Humayun - Mughal emperor.
In 1550 he was killed along with other Mughals by the hand of Kashmiri rebels. His lineage ended.
It is true that Sultan of Kashghar attached Kashmir and won over it, but could not hold it for more than 3 months.
Mirza Muhammad Haidar Doghlat was from Kashghar (Yarkand) and did rule Kashmir between 1540-50 but had authorities obtained from Humayun and not Chaghatai.