I used to watch a significantly more varied selection of things, from Videogames to PBS videos about how itching works, and I still do that from time to time but since the birth of our second child...things changed.

I mainly watch YouTube before I go to bed now (whereas before I'd watch it...to watch it), so I tend to watch a lot of lore breakdown videos, namely for Fromsoft titles or A Song of Ice and Fire.

Lots of Hockey, usually breakdowns about major events in history; trade trees and significant events and the like.

I also watch a fair bit of Politics-tube and general videogame stuff.

If I had to recommend five or six:

Game Makers Tool Kit - Videogame deepdives.

VaatiVidya - Fromsoft lore.

In Deep Geek - ASOIAF lore.

Hockey Physiology - Hockey.

Kurzgesagt - Explainers from Space to microbes.

Sam Backman - Android Apps/Tech.

Mr Beat - Teacher who does President Videos (I'm a nerd).

Icethetics - Hockey uniforms,logos etc etc.

Map Men - They do videos about Maps.

Lessons From The Screenplay - Film and TV writing.

Now You See It More Film and TV.

Vox - General video covering...well everything.

TLDR News - UK Politics