There is an excellent article on this on Aroid.org
E. pinnatum 'Aureum' is unknown in the wild and has no resolved provenance. It is supposed to have come from the solomon Islands but there is no record of it ever being wild collected. It is thought to have possibly been a cultivated selection of E. pinnatum
The article lists these differences between E. pinnatum 'Aureum' and E. area, which is misnamed as 'Golden Pothos':
Pinnatum leaf shape is ovate to ovate/lanceolate and thicker
aureum leaf shape is lanceolate to elliptic
The characteristic netted sheath is present in pinnatum, absent in aureum
Leaf lamina pinholes are present in pinnatum and smaller fewer in aureum and almost never perforate
Pinnatum leaves are thicker than aureum
Aureum produces a massive amount of foraging flagellate roots and many many offshoots (which is why its so invasive when it gets loose somewhere like South Florida), pinnatum is sparser and produces much less roots and offshoots
