if you have not heard these metalica covers, they are also very good. for example
https://www.youtube.com/watch?v=mjvGjUovxPU
or
https://www.youtube.com/watch?v=VWEmsUiQELU
looks like they are touring again. I heard them many years ago.
I had a friend who was a concert cellist for a while.
Those are good. There are several classical pieces around that would also work in a crossover style such as heavy metal.
One such work would be ‘Toccata and Fugue in D Minor
BWV 538 “Dorian”, Pipe Organ powerhaus. 12: 59 minutes!
Your second YouTube; “Hall of the Mountain King” was composed by Edvard Grieg. I like a lot of his work. I have some of his concertos written for cello.