I never used any type of extra lighting on an outdoor grow. The sunlight was plenty strong.
I have seen outdoor plants, back in the 70’s/80’s mostly, that were planted under/near various types of HID lights, mercury vapor, metal halide, sodium vapor, ect., that came on at dusk and off at dawn.
Some of those plants turned into monsters, although I don’t remember how well they yielded… that, in itself, could be the answer, however, I’m sure that some had to yield well depending on what light spectrum they were influenced by during the nighttime hours.
We didn’t take many pictures of cannabis plants back then, if you got caught cultivating cannabis, your pictures were proof and helped convict you.