Health:

- Dr. Ekberg: https://www.youtube.com/c/drekberg (2M subs)

- Dr. Berg: https://www.youtube.com/c/DrEricBergDC (8M subs)

Car repair & detailing:

- Chris Fixx: https://www.youtube.com/c/chrisfix (9M subs)

Piano:

https://www.youtube.com/user/cedarvillemusic

https://www.youtube.com/channel/UC3vYz1SAtcbRhsatydObGQw

https://www.youtube.com/user/PianistMagazine (Graham Fitch)

https://www.youtube.com/user/SteveMass1101

https://www.youtube.com/channel/UCr0BMA5yu3AS0alkR7kYwEQ

https://www.youtube.com/user/aw4piano

https://www.youtube.com/channel/UCLsMRd097KLJMvkNzC4rYAA

https://www.youtube.com/c/DanielBarenboim/videos

https://www.youtube.com/channel/UC6tpkZhNpJiTnlUgoiUe9QQ