When they initially announced loot filters they did plan to add template filters as well.
But for reason that we don’t know that was not done.
After they initially implemented filters a lot of people liked the loot filter and tinkered around with them, but because there were still a significant amount of people asking for help or asking people if they could use/psot their filters I decided to do a generic template filter for all classes.
These are very generic and don’t really hide that much, except low level base types (once you are in the level range of higher base types.
From everything I gathered in thsi thread I am not sure if my Filters are what you are looking for, tough.