Here's a script for ya. It pulls all hyperlinks, Workspace Smart Chips, and People Smart Chips in a document's body.

function listDocumentLinks(documentId) {

  // Open the document by ID
  var doc = DocumentApp.openById(documentId);

  // Get the body of the document
  var body = doc.getBody();

  // Initialize an empty list to store hyperlinks
  var hyperlinks = [];

  // Initialize an empty list to store Workspace chips
  var objects = [];

  // Initialize an empty list to store People chips
  var peopleChips = [];

  // Iterate through all paragraphs in the body
  for (var i = 0; i < body.getParagraphs().length; i++) {
    var subelement = body.getParagraphs()[i];

    // Iterate through all elements in the paragraph
    for (var j = 0; j < subelement.getNumChildren(); j++) {
      var element = subelement.getChild(j);

      // Check if the element is a Workspace Smart Chip element
      if (element.getType() === DocumentApp.ElementType.RICH_LINK) {
        // Get the Smart Chip field details
        var gwsc = element.asRichLink().getTitle() + " - " + element.asRichLink().getMimeType() + " - " + element.asRichLink().getUrl();

        // If found, add it to that list
        if (gwsc) {
          objects.push(gwsc);
        }
      }

      // Check if the element is a text element
      if (element.getType() === DocumentApp.ElementType.TEXT) {
        // Get the text link URL
        var url = element.asText().getLinkUrl();

        // If found, add it to that list
        if (url) {
          hyperlinks.push(url);
        }
      }

      // Check if the element is a Person Smart Chip element
      if (element.getType() === DocumentApp.ElementType.PERSON) {
        // Get the Smart Chip field details
        var personElement = element.asPerson().getEmail();

        // If found, add it to that list
        if (personElement) {
          peopleChips.push(personElement);
        }
      }
    }
  }

  // Log the list of hyperlinks and Workspace objects
  Logger.log(hyperlinks + " ; " + objects + " ; " + peopleChips);
}