I mean obviously Fahrenheit 451 and The Handmaid’s Tale if you liked BNW and 1984!
Personally I enjoyed a lot of HG Wells’ work for similar reasons — War of The Worlds, for example, is an obvious allegory for colonialism, (with the aliens as the empire builders). The original book is excellent. I binged a tonne of his works, including the Time Machine, the invisible man, the sleeper wakes and the island of dr Moreau. They’re quite short books. Easily read in a day (though I am a fast reader).
Otherwise I quite enjoyed for whom the bell tolls (Hemingway; set during the Spanish civil war, in which he fought, as well as Orwell funnily enough).