I'll add some:

AlphaPhoenix - science

Jay Foreman - UK centric cartography skits, very funny

Atomic Frontier - various, Tom Scott style

Climate Town - US centric climate related skits, very informative, also very funny

Dr. Becky - astronomy

Into Europe - light, EU related informative skits

Johnny Harris - journalist turned YouTuber, opinionated but tries to keep a politically neutral stance