RGBW cool, natural, warm for best colour range?

Hola, at the last in-person EMF Camp in the old world, I watched someone do a talk about addressable LEDs. They said that RGBW would produce better colour range with some white balance wizardry. I want to try this for a project that will have acrylic backlit with LEDs. The question is, which white would be best for colour mixing? Natural, cool, or warm?

many thanks in advance!