Grade of bare root rose

I recently received four bare root roses, which I had ordered from a major online source. One of them looked really great with three big, healthy canes and it already had a significant basal break. None of the other three roses were this pretty. One had 2 canes 3/16. One had 1 large cane and 1 small cane. The last had 2 large canes. They are all in the ground and I think they are going to be fine, but I wondered if they were really Grade 1 roses.
I looked online for a definition of “grade 1 rose.”

I found: “3 or more canes >5/16 inch.”

Is there a generally accepted definition for “grade 1 Rose?