Mountain Lion, El Capitan, and High Sierra were all essentially 'Snow Leopards' Snow Leopard also introduced major new features, like Quicktime X and the App S

Mountain Lion, El Capitan, and High Sierra were all essentially 'Snow Leopards' Snow Leopard also introduced major new features, like Quicktime X and the App Store. It wasn't quite what people seem to think it is now, 10 years later.