I go the other way and hide the communities I don't want to see (e.g., I'm not into yiff). I do subscribe to ones I want to see, too, but mostly I view all with some filtered out. New communities are being developed every day and I might miss some with the subscribe method.
O damn, I didn't even know this! That's awesome, is there a list to check out? I probably will stick with old.lemmy.world, but that's cool that there are other layouts/looks.