Help! I need a sheep diagnosis for teat growths

We just handled all of our sheep today and were very pleased with everyone overall, then just as we packed up supplies, I noticed this. It looks to me like the tissue is necrotic after the lesions form then subside (the smaller bubbles appear older and are black). I'm worried about the brown spots on her udder around the teats too. This ewe is gorgeous in every other way and shows no signs of distress.

Is there anyone out there with experience or knowledge of what this might be? Treatment?

It doesn't look like staph or mastitis to me. Some other bacterial growth maybe?

Questions I'm getting--
- It's on both teats, i attached a photo of the other side too.
- She lambed this spring and everything was fine; we noticed no symptoms until today.
- It doesn't look like any mastitis, sore mouth, warts, or even staph to me and we noticed no symptoms in the other sheep
- I did not touch it but she didn't seem sore.

I'm stumped and can't seem to get help until Monday. I think we'll spray it with iodine tomorrow (it's dark and raining now) and drench her with a garlic and ACV concoction too.

Replying to bump your post up.

This is an unusual one to me. I really can't say that I have seen this before.

I don't think you can do any harm by utilizing iodine/drench. If you find a diagnosis please do share.

Those are some gnarly nodules!

Did they clear up?  Did your ewe survive?  I would love to know more

I asked every vet I could think of. I really detest hauling my animals in for visits and they charge so much to come to us. Luckily the photos were enough for several of them to concur, more or less, that they are growths/lesions/scar tissue from nursing lambs that had sore mouth. People that raise sheep seemed to know because they see them regularly and were confident but nobody else (the horse vets or book-learned vets) knew. We do usually get mild cases of sore mouth on lambs in spring. It's only on their mouths (I've never seen it anywhere else) and the nodules are not active or contagious, just leftover weirdness. Not urgent but she is a cull. We won't risk bottle lambs.

Thanks for the update.  I take it sore mouth is a viral or bacterial infection that I can learn about online, maybe there’s a thread here on permies.