"I wonder how the markings of the different pencils I have will look on art paper."
To find the answer, I took my art pencils out. I wrote the hardness numbers/letters for each. Then, I scribbled a little bit with hard pressure and a little bit with soft pressure for each next to the hardness numbers/letters that represented each. This was all done on a scrap piece of artist's paper. (I will keep the scrap for reference until I get to know what each pencil can do.) And, I am happy to say that:
I learned something new!
Here is the result: