Lightning Pets is probably the strongest pets if you’re going Conjurer + Beastcaller’s, but the thing about it is that Beastcaller’s + Lightning is probably done better with Druid:
Superfluff’s Druid (Includes Grimtools link in description)
The pet build that’s probably closest to “pure Conjurer pets” would be a Physical + Bleeding pets as Conjurer’s CoF + Devouring Swarm provides a huge advantage other classes wouldn’t be able to replicate.
Sigatrev’s Nature Guardians pets
Proof of Physical pets beating Ravager
As for your particular build, as a pet enthusiast, I hope you became friends with Barrowhelm, as Ravager’s Eye as your weapon + offhand slots makes your build much, much better. There’s two ways you can go about this - if you want to keep Primal Instinct, I think your build (+ Ravager augments) is as optimal as it’s going to get. I’d take points from Emboldening Presence or Manipulation to put in Aspect of the Guardian, but otherwise, there’s nothing outdated about that skill placement. If you’re in the mood for hunting MI’s, a Taskmaster’s Bysmiel Pants of Kings would fit your build perfectly, but I assume you’re playing legit and don’t want to bore yourself to death searching for the perfect Bysmiel pants.
If you want to use Mogdrogen’s Ardor relic, that’s another story entirely. In which case, I don’t see much of a reason to keep Fiend + Solael as you no longer have any pets that do Fire damage. I’d definitely give the Ultos proc to the Hellhound - if it’s not shooting 5 projectiles at 26/16, Bird will do a terrible job proccing that particular devotion.
Here’s a possible set-up using Mogdrogen relic, along with having Ravager’s Eye relic and a new devotion set-up for it:
https://www.grimtools.com/calc/D2pKB01N
Bat looks like it’ll be great for Briarthorns, especially as 100% of Twin Fang’s Vitality damage is converted to Lightning damage. With Mogdrogen relic and my other changes, it’ll definitely help keep your pets alive.