Sure, but that’s Atlas V and Delta IV. When Atlas got an Upper stage, they called it Atlas-Able, or Atlas-Agena, or Atlas-Centaur. When it got a stretch and new engines, it became the Atlas II.
Aside from a few stand-out programs — looking at you, Star Trek — by the late 1960s, TV had already become the “vast wasteland” predicted almost a decade earlier by Newton Minnow. But for the ...