Hmm, I think this goes with some work I’m doing now on spectral sensitivity. I would think that, to get “representative” (I’ll not use the word accurate here…) skin tones one would want light containing the wavelengths that tickle the particular reflectances of skin. So, my notion of “standard” would be “full visible spectrum”, as opposed to some of the mixtures concocted by fluorescent and LED lighting.
I just bought a tungsten-halogen accent light for that; this source tails down in power as it approaches ultraviolet, but at least the visible spectrum has coverage.