| Alaska-Yukon Ranges | Level 2 (Parent) |
|          Brooks Range | Level 3 (Sibling) |
|          Alaska Intermountain Ranges | Level 3 |
|                  Seward Peninsula Ranges | Level 4 (Child) |
|                  Kobuk-Koyukuk Ranges | Level 4 (Child) |
|                  Nulato Hills | Level 4 (Child) |
|                  Bering Sea Islands | Level 4 (Child) |
|                  Kuskokwim Mountains | Level 4 (Child) |
|                  Yukon-Koyukuk Ranges | Level 4 (Child) |
|                  North Fairbanks Area | Level 4 (Child) |
|                  East Central Alaska | Level 4 (Child) |
|          Alaska Range | Level 3 (Sibling) |
|          Aleutian Ranges | Level 3 (Sibling) |
|          South-Central Alaska | Level 3 (Sibling) |
|          Saint Elias Mountains | Level 3 (Sibling) |
|          Yukon Intermountain Ranges | Level 3 (Sibling) |
|          Mackenzie Mountains | Level 3 (Sibling) |