Sorc and hammerdin are core. No other combo is worth considering. If you’re adding a third, another hammerdin just honestly sounds like the best as well. I disagree about going light sorc, though. In hell, without proper gear, the sorc is for teleporting and supporting your hammerdins with static and freeze (blizz/glacial spike). Hammers do the rest, no conviction required. Have one just use meditation for convenience.
If you aren’t on HC, you don’t need to worry about BO barb / summon necro for survivability. Just teleport through the game and do insane hammer damage.