Hong Kong International Airport Terminal 1 (Gates 1-39): The one near the Sky Garden, and what I could find dotted towards the 39th gate.
Jewel Changi Airport (Singapore) Terminal 3's have dividers, but are low and narrow enough to see over, particularly the ones close to Butterfly Garden area. I also generally recommend trying to get a long layover here back and forth because of all the great things to see and buy in and out of immigration. It's also built next to a mall with a great water feature, but I never got to check the restrooms over there. But still had time to approve urinals further away at Tampines Mall and the various restrooms at the MRT stations.