What are the floors , what is your lighting? Too many items missing from the oveall space to choose wall color. which is after the backspalsh and all else done . Mixing tones of white can be very tricky to get right and IMO you already have 3 including the cabinet color which tyou do not mention the exact color.

If the quartz has been installed already, bring in Samplize of both your current whites, Greek Villa and White Sesame, to put up in your kitchen. If you are going to change the lighting or even just the light bulbs, do it while the samples are up. You can have the walls primed with white primer to get rid of the Whole Wheat paint reflections before making a final decision.

Part2: The floors are oak hardwood with Provencial stain.the hardware is brushed nickel and the light fixtures over the island ate black iron cages with brushed nickle candle ubras inside.

@Ann Benzshawel, can you please post images of your floors cabinets and counter material?