There was Mal Duncan who debuted in 1970. One year after Falcon's debut and four years after BP but still predates Black Panther and Blade but that was still at the tail end of the Silver Age depending on when you consider to be the end of the Silver Age. Him kissing Lillith was the first example of an interracial kiss in comic book history. But Mal was basically a glorified civilian and didn't suit up until 1976.