Only Norway has significant amounts of oil, and even Norway was a prosperous welfare state before discovery of oil
I don't see why it is so important for you to ignore the Nordic experience. It seems like a very strong ideological drive to find flaws in the Nordic model or reasons to reject it.
Nordic countries started out worse than these other European countries in terms of money and resources. Nor is the demographics markedly different. German has much the same success story despite being a larger country. So there are universal lessons.
Also Nordics have lessons for all side of the political spectrum. Nordic countries have active states and many welfare services however they also relentlessly push people to work. Not necessarily by punishing them economically as many Anglo-Saxon countries to but by also offering a lot of help for people who struggle to get into work: health care, re-training, childcare etc.
Nordics are also very pro business and free trade. Nordics focus on helping people as individuals but there is not that much of propping up failing businesses. Unlike the US e.g. Sweden never bailed out failed car companies.
Nordics is a mix of both socialist and capitalist ideas. Unfortunately there has been a right wing agenda to tar the Nordic reputation for decades. All the way back to Eisenhower American conservatives strongly disliked Nordic countries. Sweden in particular was singled out as an object of derision. That Sweden in the 50s did not stigmatize single mothers offended them greatly.
Conservatives all the way back to the 50s ran all sorts of hit pieces on Sweden about how loose their sexual morality was. How society was falling apart in due to drunkness and low morality. These people have predicted and wished for our failure for decades. And it is frankly a bit sick that this belittling of Nordic success stories still keeps going.
We have not figured out everything, but can we not be given credit for something? Must there always be a dark side to Nordics to hype up among conservatives?