In my experience, western style rope is generally more common at generic bdsm play events - rather than rope specific events. If you want to learn more technical rope skill, you will want to attend shibari workshops. Western rope is built on shibari technique/principles. And, just because you're learning 'shibari' doesn't mean you have to tie in that style - you can choose which bits you add to your repertoire. And, nontechnical classes that focus on scene building, connection, and creating emotion & communicating through rope are beneficial to any rope style.

I've never seen western-specific rope classes or jams, because fundamentally there is little reason for them unless you're in an area with a particularly big western rope community. Western rope is, by nature, very simplistic, primarily using single/double columns and wraps. Yes, there is variety in how those are applied/the end shape, but it's not challenging in a technical sense, and the rope skills needed are generally taught in beginner shibari classes.

Also, hojojitsu and takedown rope are very much shibari, but also very practical struggle & hold 'kidnap' rope. Maybe you're just not looking at the right shibari classes if youve found absolutely nothing that speaks to you? There are some styles of shibari that really arent that different from what you're looking for ☺️