No Nordic country describes itself as socialist. The Nordic welfare model is made possible by free markets and private enterprise: https://en.wikipedia.org/wiki/Nordic_model

This conflation of a welfare state with democratic socialism is Bernie Bro level nonsense: https://www.thelocal.dk/20151101/danish-pm-in-us-denmark-is-...

Despite the PM not wishing to be seen adopting a US-negatively stereotyped moniker, the economy is democratic socialism. See the wiki article for more sources. Also, your wiki article[0] describes the Nordic model transition to socialism.

[0] https://en.wikipedia.org/wiki/Nordic_model#Sweden