Atomic Frontier: superbly made science videos, I think I've learnt something in every video (62k): https://www.youtube.com/c/atomicfrontieronline

Xyla Foxlin: creative, very enthusiastic crafter, canoe building was fabulous (67k): https://www.youtube.com/c/xylafoxlin

The Tim Traveller: quirkly little places, fabulous humour (190k): https://www.youtube.com/c/TheTimTraveller