I've just seen that Lemiso, best known for their plaster moulded landscaping and buildings, have launched a range of Nm models. This includes vehicles from the Harz and Mollibahnen, and a range of interesting track pieces. There are many turnouts, even curved and dual-gauge items.
https://www.lemiso.de/en/N-gauge--1-160-/schmalspur-nm/
[Blockierte Grafik: https://www.lemiso.de/images/categories/Gleise_5.jpg]