The thing about outcasts is they are all their own subfactions. None of them really have models that cross between 2 of the masters. As such, your going to need to buy a lot more to flesh out each master fully than if you went with a different faction. Thatp being said however, each outcast master seems to do pretty well at each stratgey.
As for your levi list, i would probably drop a belle and both doxies. It seems that your focusing a lot on the undead for Leveticus when you need to remember that he can also take constructs. My suggestion for levi would be always take a canine remains, probably rusty alyce, and other good things like ashes and dust and a single rotten belle. This list has a lot more synergy to it than bete with some belles and doxies. The other reasoning for droping the doxies is they generally dont hold up as well as they should and their not as great as regular rotten belles for their price. You also dont need them for damage output because Leveticus alone can take down any 9wd model with 2 spells.
Also, dont focus on making a list to complete so many stratgies, there is a reson the rules are setup to allow you to find out what your doing and then pick a list. If you really feel the need to make premade lists, something thats not really recommended because you wouldnt be taking into account things like your opponents faction when making, then try making a seperate list for each stratgey.