OSM tag name=Hart Island matches Hart Island in these Wikidata fields:
| Islands of Skagit County, Washington | admin_level, place=islet, boundary=administrative, place=island |
| River islands of Washington (state) | admin_level, place=islet, boundary=administrative, place=island |
| Uninhabited islands of Washington (state) | admin_level, place=islet, boundary=administrative, place=island |