My absolute favorite of this year is in my native tounge Swedish and is about fires in our perhaps dystopian future: https://podd.app/podcast/p3-dystopia/brandernas-tidsalder

On second place, it got to be Notpetya, by Darknet Diaries (https://podd.app/podcast/darknet-diaries/54-notpetya). Technically released in late december 2019, but I listened to it in januari 2020. It's about Notpetya, the virus/worm that attacked a country in 2017.