On a state level, yes.
Yes because it works
I'd rather just have more accessible labor unions and a MASSIVE investment in education here. That would solve a lot of income inequality, crime, and poverty withing 30 years with only token increases in taxes. Sorry, but I'd rather try out the plan with the least infringement on property rights.
The US and the Nordic countries are VASTLY different in both demographic, land mass, resources, population and several other categories. Expecting something that works for one country to work for ALL countries is foolish.