I don’t know how any of these are returning anything unless there is more code involved than you are posting
$imgUrl = $page_data->team_member_image;
$jobTitle = $page_data->job_title;
$teaser = $page_data->teaser_text;
These should look something like this
$imgUrl = get_field('team_member_image', $page_data->ID);
$jobTitle = get_field('job_title', $page_data->ID);
$teaser = get_field('teaser_text', $page_data->ID);