I think the most common tools for similar workflows is Google's crane[0] and Red Hat's Skopeo[1]. It might be slightly more low-level than most developers want, though.
Skopeo and crane are both fantastic tools, but they address different problems at a different level. Skopeo and crane operate at the image registry level, handling pulling, pushing, synchronizing, etc. cek is focused on what's in the container itself, providing a programmatic way to explore a container’s (overlay) filesystem and layers with commands like ls, tree, and cat.
And my favorite project for inspecting layers is Jon's https://oci.dag.dev/.