New content element wizard 

mod.wizards.newContentElement.wizardItems.ext-news {
    elements {
        news_list {
            tt_content_defValues {
                header_layout = 2
                header = Latest news from #replace this#
            }
        }

        news_detail {
           tt_content_defValues {
               header_layout = 3
               layout = 1
           }
       }
    }
}

mod.wizards.newContentElement.wizardItems.news {
    elements {
        news_pi1  {
            tt_content_defValues {
                header_layout = 2
                header = Latest news from X (replace this)
            }
        }

        news_newsdetail {
           tt_content_defValues {
               header_layout = 3
               layout = 1
           }
       }
    }
}

$GLOBALS['TCA']['tt_content']['types']['news_pi1]['creationOptions']['defaultValues'] = [
    'header_layout' => 2,
    'header' => 'Latest news from X (replace this)',
];

$GLOBALS['TCA']['tt_content']['types']['news_newsdetail]['creationOptions']['defaultValues'] = [
   'header_layout' => 3,
   'layout' => 1,
];