I saw one that was much much more golden with little marbling, mostly yellow patches. and started looking. seems there is 'Hawaiian'/'Hawaiian Golden'/ 'Golden Hawaiian' that looks very close. Ever seen those? i'll get a pic of it ASAP
as i see we don't have it.
of course, it's a guess ...
found reference to it at UofFL:
'Hawaiian Pothos' is another similar cultivar with more intense yellow coloration.
somebody mentioned it at houzz:
Epipremnum aureum "Hawaiin" is a true cultivated form of this plant. According to Aroideana Vol. 24, A Review of Epipremnum in Cultivation, Peter Boyce, it has leaves with dense but fragmented yellow variegation.