There really are very few visual differences between varieties of cannabis: I can guess that it’s probably sativa leaning based on the leaf shape, and based on the height it’s may have indica or ruderalis genes. Other than that you might be able to make a guess based on flavor. If it’s a bag seed, it may or may not be what was smoked in the bag, it would all depend on the genetics of the pollen donor.
Unfortunately you will never know what it is!! Enjoy the smoke. Guys often forget to label plants. Then its a stuff up from then on. Sure it will taste great!!