You’ve got a few of my suggestions so I’ll follow up with…

https://youtube.com/adafruit if you like electronics

https://youtube.com/@physicsgirl hopefully she’ll be back from her long covid at some point soon

https://youtube.com/@britishmuseum no one presenter but a good range of curators

I tend to say something along the lines of “what’s your problem?”

Gives an opening to hear more without committing, and makes it clear it’s still THEIR problem.