There are a lot of Dutch organs for HW, from several centuries, and they all sound "Dutch". Here are some examples:
https://www.sonusparadisi.cz/en/organs/netherlands.html
https://voxusorgans.com/en
https://hauptwerkshop.com/software/haup ... s/sygsoft/
You might look at the ones originally built in the 19th century as a starting point since this one was 1866 and you like it. You can listen to many of them on Contrebombarde, and some have demo or trial versions. There are also others besides the 3 above.
To get the exaggerated wind sag in that recording, you can increase wind parameters in HW on some of them that have a sufficiently low wind supply. Others just don't have that issue.