https://onlinelibrary.wiley.com/doi/abs/10.1111/roiw.12294
Note that the study above only analyzed wealth in Sweden over the time period of 2007 (when the wealth tax was repealed, not 2005 as I erroneously wrote in my earlier comment) and 2012.
Germany and Norway don't share a comparable Wealth Gini (like I said above, it's WEALTH Gini, not Income Gini).
While absolute wealth inequality did grow in both NO and DE since 2008, SE's Wealth Concentration also at a much higher starting position than either NO and SE in 2008
2008 - 2019
DE 0.667 0.816NO 0.663 0.798
SE 0.742 0.867
2008 - https://www.nber.org/papers/w15508
2019 - https://www.credit-suisse.com/media/assets/corporate/docs/ab...
And finally, roughly the same old money families/nobility that existed in Sweden c. 1700 continue to have a roughly similar impact in Sweden c. 2012 from a social mobility standpoint.
https://faculty.econ.ucdavis.edu/faculty/gclark/papers/Swede...