Medea has already linked my Carnival post up above, so let me instead say welcome back and I am glad to have been of assistance 
This is my best build atm - The Fluffy Squishy - Pet Conjurer :3
But since you mentioned skeletons - Skulls & Bones - Pet Ritualist
Do keep in mind that both are endgame builds and the Skeleton Ritualist is more damage focused compare to the Conjurer’s sheer tankiness.
For farming, unfortunately the endgame pet sets are all random drops. So you are going to be stuck with farming Totems, Hero/Nemesis bosses for the most part along with Shattered Realms.
If you need a more budget setup -
- Dark Rose - Lazy Dark One’s Set Budget Pet Conjurer
- Nocturne – Lazy, Budget, Player scaled Pets, Conjurer & Ritualist (I don’t have an up-to-date build for budget Pet Ritualist atm, so recommending a non pet one
)