How to extract entity names using XCAF

Maybe this can help you: https://unlimited3d.wordpress.com/2022/09/09/colored-step-model-in-occt-...
and then under the header "Exploring assembly structure"

Hello. OCC vertex do keep the entity name from STP model. To extract the name of Vertex, you need to extract the name from StepData_Model and TransferProcess.

Keeping name of vertexes is expensive operation, that is why if you need that - you need to extract it manually. Just XBF result of import is not enough.

To extract the STP entity - you need to detect TopoDS_Vertex which is your target, then extract the entity and extract all the details from that entity. But you will not take "\x06...." because it is a specific ISO coding, which we convert to UTF-8 automatically.

TopoDS_Shape Shape = ...;
const Handle(XSControl_TransferReader)& TR = WS()->TransferReader();
Standard_Integer           modrec = 1;
Handle(Standard_Transient) ent    = TR->EntityFromShapeResult(Shape, modrec);
if (ent.IsNull())
{
  modrec = -1;
  ent    = TR->EntityFromShapeResult(Shape, modrec);
}
if (ent.IsNull())
{
      modrec                               = 2;
      Handle(Transfer_TransientProcess) TP = TR->TransientProcess();
      if (TP.IsNull())
      {
        if (silent)
          sout << "Shape " << arg1 << " : ";
        sout << "no map" << std::endl;
      }
      else
      {
        TopoDS_Shape    S0 = Shape;
        TopLoc_Location L;
        S0.Location(L);
        Standard_Integer i, nb = TP->NbMapped();
        if (!silent)
          sout << "searching in map among " << nb << " ...";
        for (i = 1; i <= nb; i++)
        {
          ent             = TP->Mapped(i);
          TopoDS_Shape sh = TransferBRep::ShapeResult(TP, ent);
          if (sh.IsNull())
          {
            ent.Nullify();
            continue;
          }
          if (XSControl_IsEqualSubShape(Shape, sh, aLevel))
            break;
          modrec = -2;
          sh.Location(L);
          if (XSControl_IsEqualSubShape(S0, sh, aLevel))
            break;
          ent.Nullify();
          modrec = 2;
        }
      }
}

Best regards, Dmitrii.