It really sounds nothing at all like ALS, but you know that already. Your neurologist would have told you. Your EMG would not be normal. I really feel confident in saying that it's not ALS! With clear brain and spinal MRIs , MS is off the table as well. Some of your symptoms can be caused by spinal issues, but with a normal spine , then that too is unlikely.
I take it, that you have an abnormal clinical examination?