I would not use the Dutch because they are "Euro-Mutts", they are super diverse and super ethnically mixed (Germano-Celto-Romance mixes).
Just look at Davidski's PCA graphs from Eurogenes - the Dutch overlap with everyone: the French, the Germans, the Scandinavians, the Brits.
If Irish score Dutch in Global25, it is because the Dutch are mixed. Only North Dutch are actually real Germanics in terms of genetics.
These facts (that the Dutch are huge mutts) have been proven by genetic studies:
1.
"Clinal distribution of human genomic diversity across the Netherlands despite archaeological evidence...", Investigative Genetics 2013:
https://investigativegenetics.biomed.../2041-2223-4-9
2.
"Whole-genome sequence variation, population structure and demographic history of the Dutch population", Nature Genetics 2014:
https://www.researchgate.net/publica...tch_population
https://www.nature.com/articles/ng.3021