We've started watching The Last Kingdom on Netflix (about Danish/English conflict in like the 800s, basically Vikings) and 3 episodes in, it's been super compelling.
Lots of deaths, so I'm not sure anyone has plot armor other than the main character, but considering the setting, this makes sense. Solid, but not-over-the-top effects, and the lack of any star power among the cast (I don't recognize anyone at all) helps make it feel more 'authentic' to me. (Maybe it's a European cast?)
The big minus, as you might expect, is that 95% of the main cast is male.