Running on my PC right now, he is at 
@brian10 5 hours in, I'll keep it running. So far the potential dutchies are:
If my PC stays up long enough, maybe I'll do some post processing and do some posts with the results per country.
Another bunch:
@brittandjosie : ["ROTTERDAM, the Netherlands", "ROTTERDAM, the Netherlands"]
@cartoonbox : ["The Netherlands"]
@cooperclub : ["Netherlands "]
@corylus : ["the Netherlands"]
@croupierbot : ["Netherlands", "Netherlands"]
@crypto-econom1st : ["Netherlands ", "Netherlands "]
@davidamsterdam : ["Amsterdam", "Amsterdam "]
@dboontje : ["Netherlands", "Netherlands"]
@deceptiocracy : ["The Netherlands"]
@delph-in-holland : ["Leiden, The Netherlands", "Leiden, The Netherlands"]
@devect : ["Amsterdam"]
@dutchchemist : ["Netherlands"]
@dutchmedia : ["Amsterdam"]
@dutchresearcher : ["Amsterdam"]
@edb : ["Utrecht, Netherlands", "Utrecht, Netherlands"]
@eijffelbridge : ["The Netherlands"]
@eirik : ["Netherlands"]
@elbrava : ["Eindhoven, the Netherlands", "Zoeterwoude, the Netherlands"]
@emrebeyler : ["Netherlands"]
@erikklok : ["Hengelo, Netherlands", "Hengelo, Netherlands"]
@fernwehninja : ["Philippines - Netherlands"]
@foodielicious : ["Netherlands \ud83c\uddf3\ud83c\uddf1"]
@gandalf-the-grey : ["Netherlands"]
And a 3th bunch, almost halfway through the alphabet now:
@gindor : ["The Netherlands", "The Netherlands"]
@giojuniorl : ["Netherlands"]
@goldrooster : ["Netherlands", "Netherlands"]
@greendeliverence : ["Den haag, Netherlands", "Den haag, Netherlands"]
@greendelivernl : ["den Haag, the Netherlands", "den Haag, the Netherlands"]
@guchtere : ["Netherlands", "Netherlands"]
@haastrecht : ["Netherlands", "Netherlands"]
@hatsekidee : ["Amsterdam", "Amsterdam"]
@heyitshaas : ["Amsterdam / Bangkok", "Bangkok/ Amsterdam"]
@hetty-rowan : ["Netherlands", ""]
@heygio : ["The Netherlands"]
@hivefest : ["Amsterdam, The Netherlands"]
@inkvizstudios : ["Netherlands", "Netherlands"]
@invest4free : ["Zoeterwoude, the Netherlands"]
@isaturn : ["Amsterdam"]
@jjsienna : ["Eindhoven, The Netherlands "]
@jolanda : ["Netherlands", "Netherlands"]
@k64 : ["The Hague, the Netherlands", "The Hague, the Netherlands"]
@karinxxl : ["Switzerland", "Netherlands"]
@lapingvino : ["Ede, NL", "Netherlands"]
@larkin36 : ["The Netherlands "]
@leelektrik : ["London", "Netherlands"]
@lion200 : ["The Netherlands", "The Netherlands"]
@loonatic : ["the netherlands", "the netherlands"]
@lucabarbera : ["The Netherlands"]
@luckerella : ["Netherlands"]
@macrophotography : ["Holland", "Holland"]
@marjoleinsch : ["Leiden, The Netherlands and Cazilhac, France"]
@masty6 : ["Netherlands"]
@mavassie : ["Netherlands", "Netherlands"]
An other bunch:
@michaelalbaho : ["Breda, Netherlands", "Breda, Netherlands"]
@michelmake : ["Netherlands", "Netherlands"]
@minersean : ["Netherlands", "Netherlands"]
@minigunner : ["Unknown", "the Netherlands"]
@misterro : ["Netherlands", "Netherlands"]
@mistressonline : ["The Netherlands"]
@mjtravel : ["Netherlands", "France"]
@montycashmusic : ["The World", "Weert, Netherlands"]
@musicapoetica : ["Netherlands", "Netherlands"]
@nantoriousb : ["Netherlands", "Netherlands"]
@nieuwscafe : ["Amsterdam"]
@nobyeni : ["Netherlands", "Netherlands"]
@nozem01 : ["The Netherlands"]
@nymia.aryn : ["The world", "The Netherlands"]
@oddballgraphics : ["Netherlands", "The Hague NL"]
@omgodist : ["the Netherlands"]
@oudekrijger : ["Netherlands"]
@p4ragon : ["The Netherlands", "The Netherlands"]
@patrycjabart : ["The Netherlands"]
@petrajordan : ["Amsterdam, Netherlands", "Amsterdam, Netherlands"]
@pibara : ["Netherlands", "Netherlands"]
@pieternijmeijer : ["The Netherlands"]
@playfulfoodie : ["The Netherlands", "The Netherlands"]
@plint : ["Netherlands"]
@plints : ["Netherlands"]
@primalamusica : ["The Netherlands"]
@pundito : ["The Netherlands", "The Netherlands"]
@r00sj3 : ["Amsterdam", "Amsterdam"]
@rickert-demaquis : ["The Netherlands"]
@rival : ["The Netherlands"]
@roelandp : ["Amsterdam, NL", "Amsterdam, NL"]
@sanderjansenart : ["Netherlands", "Netherlands"]
@shepherd-stories : ["The Netherlands", "In our Basket at home"]
@shourai : ["Amsterdam", "Amsterdam"]
And the final bunch:
@silentbot : ["Netherlands"]
@sinzzer : ["Netherlands", "Netherlands"]
@slacktmusic : ["Netherlands", "Netherlands"]
@small1axe : ["origin : North Holland "]
@smasssh : ["Netherlands, Sweden and France", "Netherlands, Sweden and France"]
@soyrosa : ["The Netherlands", "The Netherlands"]
@sports-meme.gif : ["Amsterdam, NL"]
@steef-05 : ["Netherlands", "Netherlands"]
@steemspoker : ["The Netherlands", "The Netherlands"]
@stresskiller : ["Netherlands", "Netherlands"]
@suc7 : ["Holland", "Holland"]
@thijsvermeer : ["The Netherlands"]
@tijntje : ["the Netherlands", "the Netherlands"]
@tristantje : ["Netherlands"]
@trouw1 : ["Netherlands"]
@tubsie : ["Netherlands"]
@ugochill : ["Amsterdam", "Amsterdam"]
@virginiamrp : ["Netherlands"]
@visualcreations : ["Netherlands"]
@vrouw : ["Amsterdam"]
@wazza84 : ["The Netherlands"]
@xsasj : ["Holland & Austria"]
@yeetmaster : ["Netherlands "]
@yutu : ["The Netherlands"]
@yourmarklubbers : ["Amsterdam"]
And a few I think I missed earlier in specific cities other than Amsterdam:
@exyle : ["Rotterdam, NL", ""]
@s3rg3 : ["Rotterdam, NL", "Rotterdam, NL"]
@spijkenisse : ["Rotterdam"]
@waltermulder : ["Rotterdam"]
@artakush : ["The Hague", "The Hague"]
@greendeliver-sm : ["Den haag", "Den haag"]
@hans001 : ["Den haag", "Den haag"]
@lordflu : ["Utrecht"]
@evertjes : ["Eindhoven"]
@mathowl : ["Groningen", "Groningen"]
@miqlos : ["Groningen"]
@myqlos : ["Groningen"]
@fathin-shihab : ["Almere", "Almere"]
Could be there are some other citties I've missed, 
@coldbeetrootsoup , but this list should get you most of the dutches who want to be identified as such, I think.
@aelugon : ["the Netherlands"]
@africka : ["Netherlands", "Everywhere "]
@aioflureedb : ["Netherlands"]
@alaniand : ["the Netherlands"]
@amsterdam-pics : ["AMSTERDAM"]
@arjendesign : ["Netherlands", "Netherlands"]
@balbaabart : ["Netherlands"]
@bengy : ["Netherlands", "Australia"]
@blockchainboyroy : ["Netherlands"]
@bokeh : ["holland", "holland"]
@sports-meme.gif
RE: A good place for Dutch Hive Meetup and Winner of Wordplay Contest