Tbh, it is very hard to jump start an online community, anywhere. Discovery is a process, and you end up having to game whatever system is in place.

For lemmy, the only way that I’ve seen is to either have an obvious name that will be searched for heavily (and most of those are taken now), or to recruit willing hype men to also post a lot. That way at least there’s going to be less serial posting, and you’ll likely get different types of posts, since even when a few people agree on the goal and subject matter, you’ll get a little difference in interpretation.