I'd argue LED flicker to be more noticeable than fluorescent or incandescent flicker because LEDs typically go from 100 % brightness to 0 % brightness in one cy

I'd argue LED flicker to be more noticeable than fluorescent or incandescent flicker because LEDs typically go from 100 % brightness to 0 % brightness in one cycle. Incandescent lights dim smoothly, so you don't get the "phantom array" effect. Fluorescent lights actually go through a range of hues during a cycle but typically don't reach complete black.