A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, formatOutdent } from '@wordpress/icons';
<Icon icon={formatOutdent} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M4 7.2v1.5h16V7.2H4zm8 8.6h8v-1.5h-8v1.5zm-4-4.6l-4 4 4 4 1-1-3-3 3-3-1-1z"></path></svg>
formatOutdent – WordPress Icon Library