I added a 4.5 tcw tennis bracelet to my stack - always wanted one and thought it’d be a handy spacer between my JUC and loves. I “sacrificed” my plain love wearing the JUC with tail facing the love (trying to avoid dings and damage to the nail head), but the scratches from the JUC overlapping on the love got to me eventually

I now wear it head facing the tennis bracelet only (otherwise it still overlaps the tennis and on occasion the love!!).
The nail head overlaps one stone on the the tennis bracelet occasionally but I think I’m ok with that - hoping the diamonds are hardy enough on both items, even though I do get paranoid as diamonds will scratch diamonds! It also gets stuck under the loves occasionally but I’m not too fussed about that. So if you want to stack it’s a matter of picking the lesser of two evils and what option you’re willing to tolerate.
My wrist size is 14cm, I shortened my 16cm tennis bracelet to 15 and I wear size 15 in JUC and 16 in loves for reference.
I do wonder if a size 14 JUC (if they ever make one…) would be better for us small-wristed ladies as I don’t like the movement up and down the arm and overlapping when stacking, but maybe due to the shape of the JUC it will never sit flush anyway….