I have no recommendations. I saw Death of Stalin and Downfall. I think I saw Arrival. I wanted to watch Chernobyl but it wasn’t available to me at the time.
Chernobyl was an HBO miniseries, which means it was siloed out of reach of non-subscribers. It is now available for free streaming on Max and Spectrum. You can buy it online at Amazon, Apple tv, Vudu and Microsoft. Ot you can buy the Blu-ray from Amazon. I’ve started buying physical media again for keepers, as the studios and streamers have started pulling content and engaging in undisclosed editing for the usual leftwing reasons.
It’s not free to you unless you are a Max or Spectrum subscriber, but Chernobyl is worth “buying a ticket.” I would go with the Blu-ray personally, but whatever. Streamer games: if you want to watch at home in 4k, you will have to subscribe to the Max expensive plan. It’s only available in SD on other platforms. Another reason to go with the Blu-ray.
P.S. The availability info on Chernobyl is from the Letterboxd “where to watch” tab. Great tool, and free.