The claimed sales figure and the total of certified units (for each country) within the provided sources include sales of albums, singles, compilation-albums, music videos as well as downloads of singles and full-length albums.
Sales figures, such as those from SoundScan, which are sometimes published by Billboard magazine, have not been included in the certified units column.
This is because Recording Industry Association of America (RIAA) and almost all other certifying bodies count streaming towards Gold and Platinum thresholds required for Digital Single Award certification.
The over certified figures, however, are often in millions of units for RIAA certifications, one such example is Rihanna's single "We Found Love", which is certified at nine times Platinum by the RIAA, yet during the time of the certification, it had sold 5.4 million downloads.
Kanye West's album The Life of Pablo achieved Platinum without selling a single copy and was only available for streaming.