When a listing says "GT9XX 1024x600", they are likely advertising the (the GT9 family), while the display driver is something else.
The physical hardware (sensor pattern) is generic, but the firmware inside the GT9xx configures the sensitivity, filtering, and resolution. gt9xx1024x600
For 1024x600, keep 0x804E = 0x00 unless physically rotated. When a listing says "GT9XX 1024x600", they are