As far as honey goes it is very high in carbs/sugar at 76.5/100g, though better than white sugar at 105/100g, the GL is also lower. I certainly wouldn't use it as spread as it would push up my BG quite a bit, but we do sometimes use it in very small quantities when cooking just to add a little sweetness.
I've tried cider vinegar, but can't provide any hard facts about the impact on my BG. It seems to be mainly recomended to help weight loss which I don't need, but it is also promoted as contributing to lower BG levels. I use it instead of normal malt vinegar as I quite like the taste and if it's helping lower my BG, so much the better.