Like… Lemmy “communities”? I don’t think I’ve ever heard them referred to as “channels”. (Not saying you’re wrong to use that terminology. It might be you’re right in your terminology and I just haven’t seen that term used in the last more-than-a-year I’ve been here somehow.)

Whatever the case, my approach is to make my default filtering and sorting “all” and “new” respectively and then opt out of any communities I don’t want to see by blocking it. Gives me a lot of exposure to any newly-created communities.