It sounds like what you want is Mishegos [1], described here [2]. In fact, this work shows that Capstone performs rather poorly compared to more permissively licensed open-source competitors such as Intel XED and Zydis. Really, if your focus is x86, then Capstone is not the right choice. If you need cross-architecture support, then perhaps Capstone is the right choice.

[1] https://github.com/trailofbits/mishegos

[2] https://blog.trailofbits.com/2019/10/31/destroying-x86_64-in...