Trump: Whatever standard run of the mill Democrats supported a decade ago or so, only mixed with Bernie Sanders style tariffs and immigration restrictions during a period of high inflation, and sold in a meaner way than Bernie would sell them. A couple of bonus points on the regulatory and tax side to deserve a mention, but not enough to make up for the protectionism and overspending.
Biden: "The very idea that, well... anyways. No joke. I don't want to say too much, just whatever the people actually running the country say." And the people behind him are more extreme left than he ever was back when he could finish a sentence, and far more extreme than those standard run of the mill Democrats while he was VP.
RFK Jr.: "What day of the week is it again? Which crowd am I talking to? I need to know these things before I speak vaguely about what my economic policy is." He wants a government large enough to address climate change, but doesn't trust it on health policy because he recognizes regulatory capture in that narrow and specific slice.
Chase: Standard classical liberal/fiscal conservative policies, but they're not put front and center in his campaign. On entitlements? Young people should be able to opt out of social security if they choose to, because it's not gonna be there for them when they retire and they deserve to be able to invest that money towards their own future rather than being forced to burn it away on intergenerational theft ponzi schemes.
Stein: "All your means belong to us. The time to assimilate is now, and resistance is futile."