A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, heading } from '@wordpress/icons';
<Icon icon={heading} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M6 5V18.5911L12 13.8473L18 18.5911V5H6Z"></path></svg>
heading – WordPress Icon Library