A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, lineSolid } from '@wordpress/icons';
<Icon icon={lineSolid} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M5 11.25h14v1.5H5z"></path></svg>
lineSolid – WordPress Icon Library