In fairness, much of Nabokov's work was originally in English, like Conrad. But to your list, I would add Kundera, Kafka, Mann, Garcia Marquez, Murakami, Chekhov, ... to name just a few authors one easily finds in American bookstores, and who are often read by American students.
The major 19th-century French authors have also long been standards in the US, both among general readers and in the reading list of K-12 education: Victor Hugo, Alexandre Dumas, Gustave Flaubert, Jules Verne, etc. However that was established in a period when American literary culture was heavily influenced by the French one.
