I´ve been publishing online courses for about 8 years (Dutch only), but only recently got around to publishing on Udemy, mostly to broaden my audience a little and perhaps take a dive into publishing English courses (even though my corner of the market already seems pretty saturated). I focus mostly on Adobe CC, but recently also refreshed my MS Office courses, which historically did pretty well on the Dutch market.
It seems Udemy has very little presence here in the Netherlands, but perhaps some new courses can change that. It's very interesting to read all of your stories, I don't speak with many other online educators. I'm looking forward to see what Udemy will bring.