A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, arrowLeft } from '@wordpress/icons';
<Icon icon={arrowLeft} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M20 11.2H6.8l3.7-3.7-1-1L3.9 12l5.6 5.5 1-1-3.7-3.7H20z"></path></svg>
arrowLeft – WordPress Icon Library