Checking for string in variable fails in twig
Via kint and a bunch of trial and error I identified the right way to do this:

{% if 'Ball' in product.field_myproduct_type.0['#plain_text'] %} Order Ball {% endif %}
{% if 'Block' in product.field_myproduct_type.0['#plain_text'] %} Order Block {% endif %}


Thank you 100pic for your assistance.