I am not the expert on thornless roses and I have several that come very very close to what you are looking for, but nope. I have never seen a rose that was guaranteed 100% thornless. Having said that, I have never seen a thorn on my Annie Lairie Mcdowell or my parents Mrs. Dudley cross.

@dianela7bnorthal thank you, that’s helpful. I’ll add them to my list.

@Life Vibes my parents live in Miami florida which is a zone 10b if I am not mistaken. They have grown Mrs. Dudley for more than 20 years and it has always performed exceptionally well. I tried here in North Alabama but it does not like the cold. Annie is an extremely hard to find rose that was bred by Kim Rupert who is one of our forum members and an amazing rosarian. After a couple of years looking I managed to score one tiny plant from Pam last year (Angel gardens in florida), so if you are ever looking for one try emailing her about it. Good luck!

@dianela7bnorthal thank you. That’s incredibily helpful. I saw ALM listings on Rogue valley farm and Rose petal nursery, out of stock though. I signed up for email notification. I will definitely email Kim Rupert. Mrs. Dudley is available on RPN.

Some classes of Austin roses are almost thornless. David Austin "Heritage" is nearly thornless in my garden.

'Renae' should be high on your list of choices, especially for your climate zone.

@Paul Barden thank you! Renae is stunning. By any chance do you know where I can order her online? I saw Rogue Valley has listing, but out of stock.

Burlington in CA offers Renae. It’s a great, independent nursery! Carol

@Life Vibes
I watched an old documentary on YouTube about rose breeders that featured a hybridizer named Harvey Davidson. He had bred roses specifically to be completely thornless.
In the documentary he was showing off his Smooth Sailing rose, which has zero thorns. He then made a full series of thornless roses with similar names: Smooth Angel, Smooth Delight, Smooth Lady, Smooth Prince, Smooth Romance and Smooth Satin.
I don't know whether any of these are available anymore, or if they're actually good roses, but they were definitely supposed to be 100% thornless.

I found prickles on underside of a few leaves of Annie L. McDowell in my zone 5a, but the bush is 90% thornless:

However, I cannot find any prickles on Robert Rippetoe's Bohemian Rhapsody. It has a wonderful sweet pea scent. Below is 100% thornless and survives eight zone 5a winters. Very drought tolerant with thick leaves, and even rabbits don't eat its thick leaves:

Robert Neil Rippetoe bred the famous "Miracle on the Hudson" rose, and he also bred 100% thornless Yves Seedling (pics. below). I found only 3 prickles on the LOWEST bush of Yves Seedling, but the upper stems are 100% thornless. The scent is most delicious of red wine and grape juice, no other roses among my 150 fragrant roses can smell like below Yves Seedling, it survived ten zone 5a winters (down to -20 F below zero):

Your thornless roses are gorgeous @strawchicago z5 !

I searched HMF for Yves Seedling but nothing came up. Was that a typo or is this an ultra-rare specimen?

Seassiderooftop: It's listed under abbreviations YVPXCHSL1 in HMF, the breeder Robert Rippetoe bred it in his hot & dry climate California and sandy soil, so it's very drought tolerant with Yves Piaget as its parent. Yves Piaget is best for hot & dry climate.

https://www.helpmefind.com/gardening/l.php?l=2.60483

Thank you so much @strawchicago z5 !!

I really appreciate the link.

This looks like an amazing rose. One more for the wish list!

I definitely need a Zephirine Drouhin!

My Therese Bugnet has a few tiny prickles low on the stems by the crown but the majority of the branches are completely smooth. The fragrance is lovely too!

Theresa Bugnet is on my wish-list, I pruned Zeph this morning, it was a joy ... no need for gloves.

@strawchicago z5 I wish you could send me cuttings 🙈 I ordered ZD three times, but two times my order got cancelled. Third time I recevied a bare rooted rose but it didnt take off, it is more than two months. Jackson and Perkins is going to send me another bare root rose when they will have back in stock. ZD is really testing my patience.

Life, I just got an email from ARE today notifying they have now Zephirine in stock. However I have already ordered one from great garden plants last month (1 quart) and it is doing fine.

Straw - such beautiful roses! You have learned so much about growing roses well and you've put that knowledge to good use. Your roses are impressive!

I had no idea that zephy had such a striking color!

And Yves Is just incredible!

My 8th year own-root Zeph. Drouhin has the longest blooming period from mid-May to end of July. It has 3 clusters of blooms this July. Scent is fabulous even at 93 F heat. Below pic. was taken July 1, 2022, in 4 hrs. of sun. It repeats if pruned after blooming.

Below pic. was taken July 27, 2021:

@strawchicago z5 Absolutely stunning! is it ZD or its sport Kathleen Harrop! It looks more light pink than medium pink.

The above pics. are ZD, I have alkaline dense clay so all my roses' colors are lighter.