The exact same people as the Dominican Republic.
The Haitian slaves revolted and set up their own society and government based on the native African model.
Despite a long and difficult history, the Dominican Republic was based on US and European influences, not tribal warfare and animism.
Maybe once the Haitians realize they just can’t up and leave their shithole, they finally might get motivated to actually do something so it won’t be such a shithole anymore.