Adding those not mentioned yet.

Animal Logic - https://www.youtube.com/c/animalogic

NHK World - https://www.youtube.com/c/NHKWORLDJAPAN

Asu (Bonsai with water features, if you want to calm yourself down.) - https://www.youtube.com/c/AsuGreen11

Goto Conferences - https://www.youtube.com/c/GotoConferences

Simple History - https://www.youtube.com/c/Simplehistory

TED - https://www.youtube.com/c/TED

TED Ed - https://www.youtube.com/teded

Economist - https://www.youtube.com/c/TheEconomist

The First Take (Japanese Music done in one shot) - https://www.youtube.com/channel/UC9zY_E8mcAo_Oq772LEZq8Q

Vice Asia - https://www.youtube.com/c/VICEAsia

Wired - https://www.youtube.com/c/WIRED