preg_replace question

I would like to exclude some pages from my wp_pages menu. But I need to exclude pages by title.

I came across something very close to what I need below.

function categories_without_title_attribute() {
$categories = wp_list_categories('echo=0');
$categories = preg_replace('/title=\"(.*?)\"/','',$categories);
echo $categories;
}

It provides a function to call pages without the title attribute.
What I need is to amend it so I can exclude pages that have specific titles. For example, let’s say ‘About Us’ and ‘Privacy Policy’.

I have tried many variations but no effect. A number ofpeople have asked for this solution but there is nothing that works posted yet.

ANy preg_replace experts have a solution that could build on the above function?

Many thanks