2) Rhett and Link

YouTube veterans Rhett and Link are still some of the biggest content creators on the internet.

The pair – whose full names are Rhett James McLaughlin, 46, and Charles Lincoln 'Link' Neal III, 45 – began posting to the platform on 2006, and have remained YouTube staples since.

The duo own the entertainment company Mythical, which is behind fan-favourite shows like 'Good Mythical Morning' and 'Mythical Kitchen'.

Rhett and Link also bought the YouTube channel Smosh – which was created by fellow content creators Anthony Padilla and Ian Hecox – in 2019 for $10 million, before agreeing to hand it back to its original owners four years later.

As of now, the pair are said to be pulling in $35 million.