I agree, The Sheep Look Up (1972) was another fine SciFi clarion call of the dangers of end-stage Capitalism, consumerism and pollution.
List wasn't meant to be exhaustive, and was focused on Totalitarianism which I see as the most immediate threat, and which will only make so many other problems—eg Anthropogenic Global Warming—much worse. There are so many other powerful works (fiction and non-fiction) which can be found on the loss of democracy
Octavia Butler's two "Parable" books are currently in the news because they are so spot on in so many details. We have been a long time going down this drainhole. One might recall that one of Ronny RayGun's 1980 campaign slogans was "Let's Make America Great Again"—which was later recycled and claimed as new and original by some other guy.
Let's also not forget that another recent slogan, "America First" has a long and complicated history. It is worth one's while to look into this. Very likely, one will (no matter one's current idea) be surprised.
As far as the Climate Crisis, one of my favourite works was Merchants of Doubt by historian Naomi Oreskes (2010). Again, there are, sadly, ever so many others.
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