A "value hierarchy" refers to the prioritization or ranking of things that are important or valuable to a person or a group. It means organizing and arranging different values in order of their significance or worth. Full definition
The religious community's tradition and belief - system offer ethical guidelines within which (or even against which) individuals can develop their own functional value hierarchies. (religion-online.org)
We can, of course, abstract from concrete values to speak of value systems and value hierarchies. (religion-online.org)
A: We are constantly looking to move materials that don't make into finished products up the value hierarchy with the ultimate objective of substantially reducing the generation of waste or byproducts completely. (foodwastealliance.org)