Twenty One Pilots as of late. Sometimes I let YouTube just play the videos as they come up so occasionally a cover of their music gets mixed in. That's how I found GnuS Cello's channel. GnuS Cello is run by Stefano Cabrera, a musician who mostly plays the cello, ukele, and seagull merlin guitar. It was his instrumental of "Ride" by Twenty One Pilots that came up and I fell in love with it immediatly. I had forgotten how much I loved listening to the cello. My brother used to play when he was school and is/was incredibly talented. I hope he decides to pick it up again.
Above is that cover I spoke about. Please give it a listen because Stefano is incredible. He also does covers of many other artists including: Linkin Park, Imagine Dragons, Coldplay, Sia, and a many others. I don't watch the videos every time, opting to just listen, but I do really enjoy his minimalist set up that focuses on the instrument.