There is, necessarily, a degree of arbitrariness to any “Top 10” list. And taste, of course, is an impossibly subjective thing. So we apologize for the many worthy designers we just did not have room to include. Our criteria: that each possesses a signature look (though they are all versatile, you just know when you’re in one of their interiors); that each works on an international scale and in a variety of areas (residential, hospitality, private yachts and jets, etc.); that each has been published in design books or monographs of their own work; and that the clientele of each represents the highest stratum of society.