A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, lineDashed } from '@wordpress/icons';
<Icon icon={lineDashed} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path fill-rule="evenodd" d="M5 11.25h3v1.5H5v-1.5zm5.5 0h3v1.5h-3v-1.5zm8.5 0h-3v1.5h3v-1.5z" clip-rule="evenodd"></path></svg>
lineDashed – WordPress Icon Library