A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, justifyTop } from '@wordpress/icons';
<Icon icon={justifyTop} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M9 20h6V9H9v11zM4 4v1.5h16V4H4z"></path></svg>
justifyTop – WordPress Icon Library