A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, postList } from '@wordpress/icons';
<Icon icon={postList} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M18 5.5H6a.5.5 0 0 0-.5.5v12a.5.5 0 0 0 .5.5h12a.5.5 0 0 0 .5-.5V6a.5.5 0 0 0-.5-.5ZM6 4h12a2 2 0 0 1 2 2v12a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2Zm1 5h1.5v1.5H7V9Zm1.5 4.5H7V15h1.5v-1.5ZM10 9h7v1.5h-7V9Zm7 4.5h-7V15h7v-1.5Z"></path></svg>
postList – WordPress Icon Library