Danish: I watched The Rain, and Chestnut Man is on my list to watch soon. I'm also interested in Elves and The Killing.
Russian: I loved Road To Calvary and To The Lake, and watched some of Better Than Us and liked it.
German: One of my favorite shows of all time is Babylon Berlin :)
Norwegian: Ragnarok is kinda interesting.
Egyptian: Paranormal is good, and only 5 episodes long.
Spanish: Cathedral of the Sea is interesting, and I loved Ministry of Time - although this one vanished from all online streamings :/
Swedish: The Restaurant is available on Sundance/Star or some other channels. Like Downton Abbey. Just watched a couple episodes, but it was nice
French: Lupin and Les Revenants (The Returned) - although I think the second is not on Netflix now, but somewhere else. Watched it many years ago
Belgium: not fantastic, but Thieves of the Wood is just one season long and enjoyable.
Italian: I liked Curon, although it didn't seem to please too many people, I think?
On my list: Trapped, which is Icelandic.
Cheat: Hinterland - it's made in both English and Welsh