Champagnes: if you have Skurnik present jn your market, look up J.L. Vergnon - O.G. it tastes like an illegitimate child of Krug and Salon at half if not 1/3rd of the price. All GC, 100% chard. Sublime.
For whites: Big, oak driven Chards(there are hundreds to choose from),
Old World: white Rueda with some oak if you want to be cool and hip, otherwise Meursault from a good producer is a no brainer if you have the market for it.
Rose: fuller, maybe Tempranillo based that sees old/neutral oak. (Long shot I know)