A lot of people are sensitive to very small amounts of flicker, like 3% or less. The flicker graphs you have are a good start, but it would be great to have more detailed graphs. Here’s a couple examples of what you could do:
The above graphs were generated with a Thorlabs PDA100A2 photodetector and Picoscope 2204a oscilloscope. Feel free to contact me if you’d like a demo.
This would be useful for monitors, laptops, TVs and anything else that emits light.