I find Gmail find for blocking spam but I don't use those categories as they don't make any sense to me. I like the data blocking idea but text only is too clumsy a tool; I use texts as infrequently as I use email (essentially never unless I have to). I've trained myself to only have people I care about in my contacts lists in the various apps, and to not stop everything and tend to my phone as soon as it makes a sound.