Those would typically be for major label signed artists. Some independent artists might be affiliated with ASCAP and/or BMI, but not always. It's my personal gu

Those would typically be for major label signed artists. Some independent artists might be affiliated with ASCAP and/or BMI, but not always. It's my personal guess that most acts who upload via services such as TuneCore, CD Baby, or DistroKid are not members of those societies, and thus get their payments directly (through the service used).