They are good looking apples, but I can't say for certain what the variety would be.
I thing those apples are not fully ripe yet. Lots of "keeper" type apples will be very hard and tart when harvested, but given a few months of storage will taste like completely different apples. There a lots of varieties that don't reach their best until at least after December or January. I would do some testing on a few of them and see how they keep and develop.