Fediverse

I'm looking for a federated social media platform that allows for easy topic-based following and blocking, similar to how you can follow or block hashtags on Twitter. On Lemmy, you can follow communities, but there are so many that it becomes overwhelming. I want a platform where I can see or block everything related to a specific tag, and also view only the most popular posts about that topic, similar to how Lemmy communities work. Mastodon, for example, only shows the latest posts, which isn't ideal for trending content. I don't want a chat-like experience; I want to quickly see what's trending about a topic or what's trending in general, while being able to block a few specific topics. Ideally, I wouldn't have to spend hours curating a list of communities or followed users. Does anyone know of a platform that fits these criteria?