Mr Beast's videos have at least a spanish audio track, which funnily enough NewPipe defaults to (or did the last I checked) and NewPipe doesn't support changing the track as far as I can tell
When I first noticed this, I thought it was cool that dub-spiderman[0] migrated to using that right away, since he already went so hard with the mrbeast spanish and other dub channels. I assume it's preferable to have all of your subscribers on the one channel.
0: Jimmy's voice in the spanish dub of his channel is the same actor who dubs spiderman.
It was launched earlier this year. They say that "thousands" of Channels have access to the feature but who knows when the feature will be available to all channels.
As a more relevant alternative to "look I'm rich", a channel you can try this with is Real Engineering. NewPipe released a version just yesterday that now supports choosing the audio track
Chubbyemu videos often have it, and James Hoffman once used it to provide an audio channel with slurping sounds (he's a coffee channel, that's not as dodgy as it sounds) and one without.