The odd one out is another variety

Some here, recently, posted that they had a lady banks that had thorns. Just like roses can throw a sport that has a different color they can throw a sport with thorns. But since you bought them all at the same time at the same place I would also think the thorny one is something different and was mislabeled.

Like most wild roses the parental Rosa banksiae var. normalis is thorny, with the much more familiar horticultural selections var. banksiae ('Alba Plena') and 'Lutea' for instance presumably being unarmed as a part of a development process aimed at producing friendlier plants for garden use.

Watch out for Lady Banks! She can get very big very fast; giving her enough room to grow at the start will save you a lot of headaches in the future. I have a friend who thought she was going to train hers over a doorway; she eventually gave up fighting it and moved it to her 30' long fence. According to my quick search they rapidly grow "15-20 feet" and can reach "50' or more when left unpruned."

That's 50' each! Watch out for her.

So here are photos of my roses, the 3 on the left are thornless, the one on the right has thorns and the canes are more green than woody, looks less mature. The nursery grows their own roses and they only grow white and yellow thornless lady bank roses so they could not have ordered a different variety. Also photos of each close up. Any ideas of what is going on after looking? Top photo is thorned rose, bottom is thorness. They look almost identical otherwise.

Those leaves do look identical! When the nursery roots the roses they clip a branch from a mother plant and put into a pot to root. If the branch they clipped happened to be a sport with thorns then that could explain it. You will probably need to shear with hedge clippers several times in the summer after the Spring bloom to keep it as a nice green living wall. It looks like you are in a warm climate so last clipping would be early this month then let it grow new shoots that will have the Spring flowers on them, and don’t touch them until after the Spring bloom, since it blooms on previous year’s growth. One bush would have easily covered your trellis. The largest rose bush in the world is a Lady Banks in Tombstone AZ that covers 9000 sq ft. https://en.wikipedia.org/wiki/Rosa_banksiae

That is very helpful. That makes a lot of sense. Yeah I know its way to many roses but we trimmed a tree and and the privacy issue is making us so crazy I am in turbo mode to cover the trellis. They are growing super fast almost a foot a week. The one in full shade not pictured is growing the fastest. Now i have to switch them because i don't want the thorny one near my arch i am making. They have been in the ground for 2 weeks, hoping they have not spread their roots much yet.

Yes I totally get it with privacy issues! There is a thread here about Lady Banks doing very well in a parking lot where they hedge trim regularly and it bloomed every spring. So either they just don’t trim in the winter since it doesn’t grow much then or maybe they cut off some potential blooms but not all of them. I think the key to them looking good was very regular hedging though, which means over time lots more shoots sprout but since more of them they don’t throw 12 foot canes or maybe they try but trimming regularly nips them back before they start.

https://www.houzz.com/discussions/1684133/pruning-and-training-lady-banks-on-a-pergola

The different one might be 'Fortuniana'.

https://www.helpmefind.com/rose/l.php?l=21.309432

One option is I could bail the thorny one . That is an option. How would I tell if it is fortuniania? I am so excited about these roses.

Probably wait for spring blooms to determine more about the thorny one. I was also thinking that you have plenty to cover the trellis so ditch the thorny one that will just be a pain to trim. Lady Banks should have a wonderful spring bloom on your wall!

My fortuniana is not thorny.

I have a yellow banks rose going on 5 yrs, this year sent out shoots with thorns, not all of the shoots have thorns. the only thing differnt I did all last summer kept trimming those shoots from growing on my steps. Has anyone else experienced this.

Yes, we have had our two Lady Banks for one year. the bigger one has a couple of shoots that have thorns, but not all of them