How many artists have sold over 300 millions copies of their albums worldwide?

The Beatles and Elvis Presley claim to have a combined sales of their records amounting to 1 billion 600 million in record sales (unsubstantiated).

The Beatles certified sales: 246.6 million sales.

Elvis Presley certified sales: 197.9 million sales

Michael Jackson claimed sales, 750 million, certified sales: 153.7 million.

ABBA claimed sales, 370 million, certified sales:53.6 million.

Madonna claimed sales, 300 million, certified sales: 157.3 million.

Led Zeppelin claimed sales, 300 million, certified sales: 130.3 million.

Queen claimed sales, 300 million, certified sales:88.1 million.