I'm honestly not necessarily a BEM fan as class names become literally huge if you don't rely a bit on nested elements (targeting nested classes is not very BEMmy - but SASS makes it so convenient). But haven't found a naming convention or "framework" that does the job better. BEM also doesn't address how you should organize the style library for maintainability. I just use my own simplified structure based on ITCSS now.
I just wish that someone could make a methodology or an architecture of building style libraries that felt obvious and was more plug-and-play, I hate that I feel like have to revisit the style library organization and naming convention for each new project to reevaluate if it makes sense for the scope of the project.
Then again, I work as a fullstack dev in a small team of more backend-focused fullstack devs, so I don't do frontend as often as I'd like and don't really have anyone to discuss these issues with.
Very little (and long ago). We usually use a frontend stack of Angular and PrimeNG for our projects.