4. Maroon 5

Originally known as Kara’s Flowers, Maroon 5 began with a funk-rock and alternative sound before evolving into a mainstream pop powerhouse. Their embrace of electronic and dance elements, particularly on albums like Overexposed (2012), resulted in multiple chart-topping singles such as “Payphone” and “One More Night.” This new direction brought them Grammy Awards and global fame, with several hits reaching No. 1 on the Billboard Hot 100. Their transformation solidified Maroon 5 as one of the most successful pop acts of the 21st century. For a detailed career timeline, visit Billboard.