You can tell different Avocado varieties apart by the leaf shape and colour of new growth, and tree shape if you know what you are looking for.
It is hard question because we don't know the source of the grafts.
It could be a more tropical area to the south, a neighbouring country,
or an agricultural research station in your area.
It could be grafted from a unique fruiting tree in your area ?
Mexican varieties have anise scented leaves, so if it has scented leaves it is more likely a Mexican type or Mexican hybrid.
Other members might be able to guess what Avocado race the tree could possibly be ?