Definitely both. He worked really hard to become a (traditional) economist so he focused on that.
He doesn't even call himself left wing (although he obviously is) because we need to get the centre right voters on board too.
He also distinguishes between social left and economic left. He doesn't want to touch the social aspects because he has little expertise there and because a lot of the bigotry and racism stems from the economic stress which leads to scapegoating.
His central message is "tax wealth, not work". The details are not important yet.
The reality is that more people care about the economy because it affects them directly.