Six tiers give you room to map genuinely complex hierarchies — corporate reporting lines with six management layers, Bloom's Taxonomy, or a six-phase project lifecycle — without cramming text. The blue-to-green gradient creates clear visual separation between levels so audiences track movement from base to apex instantly.
Pick this one when your hierarchy has six discrete, non-negotiable levels. If you find yourself merging tiers to fit the layout, step down to the four- or five-level options instead.