Good cameras youtubers use?

I want to get a video camera thats good quality and i was wondering what ones the following youtubers use:
Grav3yard girl (bunny)
Caspar Lee
Troye Sivan
Marcus Butler
JC Caylen
Any other youtubers that have good cameras

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Will a 50mm lens be wider then 18-140mm?

So I have a Nikon d5200 with a 18-140mm lens and I wanna start a YouTube channel. I've looked at the Nikon 50mm lens. Will it have a wider angle then my current 18-140mm lens. If not, what will then? THANKS So MUCH

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