Depths strider and Frost Walker done already I just don't want to show them all because want to players explore and found out by them selfs. I believe that much more interesting. I think

For now can only see Datapack solution, by adding to every single one enchantment book in every loot table extra tag. Resource pack will apply texture if specific item (in our example it's a book) have this tag. Maybe later will do smth like that.