I have never found a brand of "Naples Yellow" that is the exact shade I like and is dense enough so that it doesn't paint like pudding.
I mix my own. The formula is Titanium white (or any white you like except pure zinc) + "Winsor Newton Yellow Ochre Pale..." (this brand only and "Yellow Ochre Pale" is NOY the same as "Yellow Ochre"!).
Because I mix my own, I can adjust the amount of yellow I add...i.e., less for the sunlit areas on a white cloth vs. adding more yellow for the sunlit areas on green grass.
I tend to use my homemade "naples yellow" as my UNIVERSAL COLOR OF LIGHT. It's good stuff and deserves this big title