Dear.
Currently, when use page setting 'Hide page title' will hide heading of page, we're will check and support page setting hide only page title text in next update version.
Because the header style 'Transparent' can't work well on all page, so Jobmonster support setting seelct page header in page to help you select 'Header Transparent' for special page if you want.
And the setting 'Header sting' is select header style for page, if use 'using header in customizer' the page will use page header style in 'Customizer -> Header -> Header Style'
Best regards.