https://pastebin.com/8bjX6ssK

Here's my take on Zombie Guardian for aHC, but certainly viable in aSC as well. Any tips or criticism welcome, especially on Zombies part. I've leveled similar builds to 100 for 3 leagues now on HC leagues, but with Spectres and Spiders, never Zombies. This time I decided on Zombies. As my playstyle is holding down Shield Charge, Zombies should attack everything without Feeding Frenzy, but if I find that doesn't work, then I need to socket in Feeding Frenzy for them. I don't like Predator support personally, but feel free to use it if you like that playstyle.

This is not really a league starter, going to be my 2nd build after getting some currency first. I guess you could make a bare bones version of this on budget, but I think the build doesn't work defensively without Aegis Aurora. For everything else, there is budget options.

Designed for general mapping and side content, not really bossing. Flasks are such a huge part of the build, not having them up constantly on bosses is pain.

I calculate resistances in following way, since there's really no point in planning what you need on every piece. Calculate how much resistances are needed for cap (curse cap if no curse immune, but this build has curse immunity from Time of Need + Yugul). 209% total elemental resistances needed for cap for this build. Divide that by rare items that you'll most likely have resistances on, in this case Gloves, 2 Rings and Belt. 209% / 4 = 52.25% average resistance required per item. Easily doable. I've set this in Custom Modifiers.

Animate Guardian gear is in 2nd Item Set named AG, but since it's bonuses do not apply, override is in Custom Modifiers. Minion Frenzy and Power Charges are from Ape Spectres. Since Zombies are permanent minions, they should always have charges up. 3rd Spectre should be Arena Master, haven't put it's stats anywhere though.

Zombie links have many different variations. I've selected the best ones, but depending on what colors you get for Skin of the Loyal/Lords, there is some variation available. Speaking of the Skin, most keystones do nothing, but there are some that would be great and some that brick the item for this build. I consider upgrade from Loyal to Lords as end game upgrade, only do it when you can afford to buy another if you happen to brick your current one.

High cost and/or high level upgrades include Awakened Minion Damage support, Empower level 4, Clarity Watcher's Eye, 2nd Cluster Jewel setup (already in PoB) and some GG Amulet with variation of ES%, flat ES, Armour%, Mana, +Gems, +Zombie (Elder), Int, All Stats, Resists.