Small correction: Soros primarily supports pretty mainstream centrist liberal organizations. Stuff like the ALCU, pro-choice organizations, immigrant rights groups, mainstream minority advocate groups, public health and environmental advocacy groups. It is quite a stretch to call it "hard-left" unless your personal Overton window is so far extreme right that you think Jeb Bush is a revolutionary communist.
He definitely funds causes right wingers and Republicans oppose, but let's get the taxonomy correct here.
He is solidly liberal, not left. Think NAACP, not black lives matter. Hillary Clinton, not Bernie Sanders. The Democratic National Committee, not the Democratic Socialists of America.