I ordered a VGA driver/controller board that is sold with/for the AT050TN22 v1 so I could verify how they are generating the timing and maybe learn an easier way to generate the needed voltages.
PIN37 (DCLK) is measured at 39.4042 MHz
PIN9 (DE) is measured at 33.6341 KHz
PIN8 (MODE) is pulled high
PIN10 (VS) is is measured at 37.9157 KHz but ignored by display
PIN11 (HS) is measured at 70 Hz but is ignored by display
Full length of DE pulse is around 16us (very lazy I eye-balled cursors)