I don't own a black blazer, but my well-worn Reiss Tux blazer in navy might be similar to what you are looking for. I do in fact wear it with jeans, trousers, and even (rarely) skirts/ dresses. Because of the waist definition it can work.
It has strong shoulders and slim arms that are easy to scrunch. It is single breasted.
Despite not favouring black, I own three more black jackets!! Which does suggest they can be useful. However, mine fill very different functions.
1. An inexpensive one from an NAS years ago, also a "tux" style with a stand collar and a jacquard texture and some knit in the sleeves. It's shorter so works better with dresses. Because black is not important in my closet but sometimes useful, this fits the bill really well.
2. A faux double breasted boyfriend-esque ruched sleeved checked number bought in 2019 with Angie at NAS. This is a fun casual style.
3. A vintage Biba kimono for wearing on summer evenings over a sheath dress (when I wore such things, LOL) and / or jeans.