There is only ONE Mahachanok. No matter who propagates or sells it, it is Mahachanok. The variables are the rootstock, soil/potting mix used, fertilizer used, growing location, watering amount/frequency/duration, climatic care and any other care related manners. With that being said, there is only ONE type/version/"variety" of Mahachanok.
Oh, the Mahachanok that TT sells most likely came from Excalibur.