First two that come to mind are Apple and Stussy.
I don’t think many will argue against Apple, but I genuinely feel Stussy has done I great job of being generally rather easy to obtain while putting together solid projects and designs.
Unlike a few years ago, it’s no longer about being the most underground, or the one that prints and sells the least T-shirts. The goal should be how can I maximize my brand’s message while still remaining relevant and of interest to the right people.
Edit: Vogel makes a good suggestion with Vans which I seemingly overlooked, or maybe I was just too much on the Stussy tip.