While there is a bit of difference between the patterning in the two animals, as has been said, they are both Eastern Bluetongues (Tiliqua scincoides). Given this sub-species ranges from past Adelaide in SA up to Cape York and across to around Mt. Isa, some degree of variation is only to be expected. You will find the greatest degree of variation in appearance occurs in QLD. Your two look like NSW specimens, mid-coast or north thereof.
Blue