These include Chroma cameras in the UK, Arca Swiss in France, Chamonix from China and very many more.
The experience of shooting large format is massively immersive: I take way longer over each image than the writer in the article, easily stretching to a half hour until I finally take a single image. It’s rare that I have more than 3 or 4 images at the end of a whole day - but the whole experience is really satisfying and meditative: my partner likens it to a day’s fishing