Paul Morris's Treasure Island is a standout that sorta transcends gay porn. They were trailblazers who suffered backlash for being ahead of the curve. Their brand (of marketing and products) is distinctive and instantly recognizable.
They don't block scenes or direct actors; they document. . . situations that are authentically piggy are filmed in real time. Once considered the fringe outsider, Treasure Island is the titan of industry standing the test of time.