You must be reading a totally different parable from which I read in my Bible.
I find nothing about 'nominal' faith in any part of the parable. Please don't tell my you added that only to justify your belief. Either a person believes or he doesn't; it's either a living faith or a dead one. There is no middle road.
You also said, "Those that planted their seed in rocky or thorny soil are those with a nominal faith. No change in life has happened but they have knowledge of the Lord and Savior Jesus Christ".
You are giving me mixed signals here. I thought the unregenerate are blind, deaf, and dumb to the things of Christ. Now you tell me they have a knowledge of Christ. How does someone you cannot possibly know spiritual things, know Christ?
You all need to get together and make a final decision at to what the unregenerate can and cannot do, and then stick with your decision. I would love to have your list when you are done. It's no wonder many people don't 'know' and misunderstand the Calvinist position; it changes when scripture contradicts it. I have also found, it something disagrees with your position, just make 'two' of the thing, and go with the one which justifies the Calvinist's belief.