Social Justice isn’t really a “Liberal” topic. It’s a topic many US Liberals generally are progressive on, but that doesn’t make it “Liberal.” Liberalism is also not about reforming the economy but maintaining “healthy” Capitalism.
Liberal views are therefore views in line with Liberalism itself, and Liberal Parties like the DNC represent Liberalism and movements towards Liberalism, not movements towards the left.
Social Democracy, ie what Scandinavian Countries have, would be centrist.