I'm sorry if this is not the best place for this, I couldn't think of anywhere better to ask about it
the reason most of these people are youtubers is because I went through my youtube subscriptions for ideas
edit: I've just realized I forgot to add rule to the title but I don't know how to fit it in there with it looking not bad
I was going to suggest John and Hank Green until I realized you already included them! So how about Destin Sandlin from Smarter Every Day?