Looks like the unidentified display is a GC9A01. So it's drivable from both #CircuitPython, https://github.com/todbot/CircuitPython_GC9A01_demos, and from #MicroPython, https://github.com/russhughes/gc9a01_mpy. Quick "Hello World!" example in MicroPython at https://gist.github.com/aallan/2e86e36177b42c919697c9d8682e36e8.