I would like to suggest a new category …
Watch faces that are based on “Thin-film Super-Twisted Nematic” (TSTN) LCD, and must therefore have only: monochrome (unless pre-colour/filtered), use only pre-defined content (shapes, pixels) locations, maintain minimum separation between elements, and (therefore) be of limited complexity.
One of the latest Tic Watch designs has an added ‘FSTN layer’, for much longer battery life …
TicWatch Pro Bluetooth Smart Watch, Layered Display, NFC Payments, Google Assistant, Android Wear, Compatible with iOS and Android (Black)
And, in a throwback to the 80s and the film Blue Thunder, my second prototype: (first one still under wraps)