A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, more } from '@wordpress/icons';
<Icon icon={more} />
<svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false"><path d="M4 9v1.5h16V9H4zm12 5.5h4V13h-4v1.5zm-6 0h4V13h-4v1.5zm-6 0h4V13H4v1.5z"></path></svg>
more – WordPress Icon Library