A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, button } from '@wordpress/icons';
<Icon icon={button} />
<svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false"><path d="M8 12.5h8V11H8v1.5Z M19 6.5H5a2 2 0 0 0-2 2V15a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2V8.5a2 2 0 0 0-2-2ZM5 8h14a.5.5 0 0 1 .5.5V15a.5.5 0 0 1-.5.5H5a.5.5 0 0 1-.5-.5V8.5A.5.5 0 0 1 5 8Z"></path></svg>
button – WordPress Icon Library