Here are some examples of American novels where populist discourse is prevalent:
"The Grapes of Wrath" by John Steinbeck
"It Can't Happen Here" by Sinclair Lewis
"The Jungle" by Upton Sinclair
"Main Street" by Sinclair Lewis
"The Great Gatsby" by F. Scott Fitzgerald (arguably contains elements of populist discourse)
These novels deal with themes of economic and social injustice, and often portray populist voices advocating for change. They offer insights into the historical and cultural forces that have shaped American politics and society.