Noa Santos, the 27-year-old cofounder and CEO of Homepolish, is running a startup that is not quite like the others, and it's not just the chandeliers dangling over the desks of the company's headquarters or the greenhouse conference room we sat down in (although these elements certainly helped.) The interior design service startup bucked the odds, first, by being profitable since day one. Then, this past January, it raised $20 million Series A, led by the investment firm of Warby Parker cofounder...