So, lemmy is a little different to the rest of the fediverse in that it doesn't have a global timeline or the ability to follow users. All you can do is follow groups on lemmy and kbin instances. For that reason, most of the block lists out there aren't terribly relevant to lemmy as they're designed for blocking microblogging instances that can appear in global feeds of other micro blogging instances.
I watch the fediblock tag, and I maintain an aggressive blocklist on our main blahaj.zone instance, but at this point, it hasn't seemed worth the effort to bring it over to lemmy, given that most of those instances won't touch this instance anyway.
I'm happy to do so if it will bring folk peace of mind however.