Some OLED chips I worked with:
Hwfly oled v3
BGA FPGA chip. Not flashable, no usb port
Appeared on aliexpress late 2021/early 2022
Made for OLED model, should be compatible with all mariko units
QSB for A/C/D points, QSB ribbon cable quality is bad
DAT0 adapter, may come with black/yellow...