A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, moreHorizontal } from '@wordpress/icons';
<Icon icon={moreHorizontal} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M11 13h2v-2h-2v2zm-6 0h2v-2H5v2zm12-2v2h2v-2h-2z"></path></svg>
moreHorizontal – WordPress Icon Library