All of the Epipremnums (your plant is not a pothos) are chimeric.
Sorry I hit the button by accident so I am editing.
Epipremnum aureum has a plain green form. This is it. Of course this is a mature one, Yours in a juvenile one.
What made yours variegated and not green was a chance mutation aeons ago that injected yellow into the green. It was separated and propagated vegetatively (because these plants almost never 'bloom' they are not 'hybridized' like many other plants). That form was then a cultivar. Sometime at some point, someone found other spontaneous mutations in the 2 basic forms. Green/yellow/white. Green and white. Green and white in different patterns.(Marble Queen, NJoy etc) Lime/chartreuse green ('Neon') Jade Satin (the one with the sheen) and so on and so on. These were spotted by some astute person, propagated vegetatively, and if the new pattern/colors were found to be stable, named, and marketed as new cultivars.
Here of course the most common variegated form. Again, a mature specimen.
