go with them man since it's far too soon to say with certainty what they are the only way you will find out is to stick with them.
I have had mutated plants before , sprouts with 3 leaves, 5 leaves and even one leaf, if you sourced them from a grower you trust then trust a little more and all will be revealed.
They are plants and variation in growth is normal it's not like they are manufactured to a uniform size and shape in some factory somewhere.