Lists: How do you make a single list from one in .pdf & one in Pages?

Open the PDF in Preview, and then copy/paste the list from the PDF into the same style of existing list in Pages. Cleanup as needed.

Or… open that PDF in Preview. Drag and drop the thumbnail representing the page that has the list in the PDF to your Desktop. Then open that single-page PDF on the Desktop in MS Word 16.31 or later to convert it to Word .docx. See if you have a proper list, and then copy/paste the formatted list from Word into Pages, if not alternatively opening the converted Word .docx itself in Pages.

Pages has no native means to alphabetize lists or body text. If one has a table column with one word to a row in that column, then the column heading can sort ascending/descending. But that is a PITA.

If your list is just a stack of words where each ends with a paragraph break, then there is a free third-party tool named WordService on the Mac App Store that installs a collection of Services when it is installed. It will work on Catalina. You would visit System Preferences > Keyboard > Shortcuts > Services > WordService:Sort Lines Ascending, and WordService:Sort Lines Descending — enabling both. The WordService services will work in any text-based application, not just Pages.

Back in Pages, select your stack of words, and from the Pages application menu > Services > WordService:Sort Lines Ascending. It will do this in an instant. To undo, press cmd+Z. After doing this once, the keyboard shortcut associated with these sorting services should work for you after selecting the text to sort.

In your Applications folder, there will be a WordService application. Its sole purpose is to open Apple's Preview with a PDF guide describing the available Services that were installed.

Tom Meade1 wrote:

(The Pages list - or the combined list - produces a cursor, not an arrow - as the  directions state.)

What do you mean by this? I used arrows as arbitrary separators between the Preferences steps to avoid a Grammarly scolding when using colons instead.

Thank you VikingOSX!

You are welcome.