The above listed screenshots are the sample products table style available on PDF Invoice PRO 2+ versions.
You can also create your own table style by adding the template files at catalog/view/theme/default/template/extension/module/pdfinvoice/oc2 and catalog/view/theme/default/template/extension/module/pdfinvoice/oc3 for OpenCart 2 and OpenCart 3 respectively.
With PDF Invoice PRO 2+ versions, you can show/hide columns and also set colors for table header, body, footer and table border.