I haven’t heard many, but I enjoyed Life and Times of Malcolm X when the late, lamented New York City Opera put it on maybe 15 years ago.
there are some great contemporary American operas, however....including Moby Dick, and It’s A Wonderful Life.
I know Kanye did an “opera” a few years ago, and it was not shall we say critially well received....
But...I applaud anyone for trying.