Rather than searching online, why not go to the airline's website itself.
Emirates' own timetable confirms the current schedule of EK21, EK17 and EK19 being the only DXB-MAN daily services at the moment... all A380 equipment.
As mentioned above, it is QR who have recently increases their DOH-MAN to 4x daily on some days of the week week. The rumoured EK increase to 4x daily.in winter could be seen as a response to QR, although looks to be at a different time of day.