Chernobyl is absolutely fucking brilliant. Shame it's only seven or eight episodes long.

I would highly recommend the first two plus series of Gomorra, a show about the Neapolitan mafia. Series three is actually OK too but series four starts to go downhill, very predictable painting by numbers stuff. I still have one or two episodes of it to watch and I'm not sure I will. Probably will at some point. The first series though are fantastic.

I'm sure I've seen something else in between those shows but can't remember.