Depends on the patch progression / when you started playing.
After 1.9 taming lupos, it will no longer deal shadow damage.
But if you had one from befoure it was patched it keept it.
Otherwise in terms of pet dmg King Bangalash > broken tooth 1.0 speed > bloodseeker bat 1.0 speed but no claw (ZG)
But I think a generic wolf/worg will stay bis for raiding throughout even if you dont have grandfathered lupus; just to spam buff rank4 Furious Howl.
Huntard pets in vanilla didnt have a constant passive 80 to 99% reduction to aoe (boss mechanics), so they died alot.
Overall it doesnt really matter all that much whatever you choose to do, pet dmg is only a minor part of your dps.
This is also why you need aimed shot, in pretty much every build.