In that way, I think it makes sense to focus on some of the largest job markets, as they explain under "Methodology":
> After reviewing hundreds of global metropolises, a shortlist of 50 of in-demand cities with sufficient, reliable, and relevant datasets were selected. This included cities known for attracting professionals and families for their work opportunities and diverse lifestyle offerings.
I live in Oslo and not in Tromsø for many reasons. Oslo has a much better weather, and has more sunlight during winter. It's much closer to other parts of the world, thanks to the international airport, the trains, the boats, and the roads. If you travel a bit, it's a huge difference. You have much more jobs in Oslo, so a higher chance to find interesting jobs. You also have a lot more people, and events, and culture. International music bands do live music in Oslo, rarely Bergen or Trondheim for example. And it has everything I want on the outdoor style, beaches, lakes, islands, sea, ski resorts, thousands of paths for biking, hiking, skiing. All that is well connected to public transport. You can take the subway from work to go skiing in the forest, and it's pretty nice.
Really the best Oslo has going for it is the job market, which is a function of population size. In other respects it remains as adoringly provincial as other Norwegian cities. Being the largest in Noway is not enough to have a big city vibe. If that's your aspiration you'll be better served by a number of other cities down that list.
For example, the work conditions in the various cities in Norway are probably more or less the same, and if anything, the criteria by Air Quality, and cost of living should place Oslo further down the list than others. And one can wonder why Bergen, Oslo, Trondheim, Tromsø, Stavanger, Bodø, etc. are not on the list.
The answer to this is sort of implied: This list only includes the cities it includes. The important takeaway is that this isn't a list over the top N cities to work in, but rather how a selection of cities rank in this regard.