Not even then. There's basically zero overlap between Conan and any 'barbarian' class I've ever seen. He's a Fighter, maybe a Ranger without any casting cos he has outdoors skills. He can sneak real well, which could be Ranger or Rogue in D&D, but berserk rage was never his bag.
I would say, that other than a wholly skill-based system like GURPS or Hero System, the only game system that could come close is Rolemaster. Their Barbarian profession would be able to do it pretty closely.
Well, I boldly claim that you could build Gandalf's powers by using Cleric spells instead of a mage, which , regarding where "Mage" comes from, opens a whole can of worms itself. except he is not the armored secondary battler. So, maybe Aasimar Theurge mage (still UA, iirc...) ?
Yet we discussed similar in the Unhate Classes thread, where this tangent rather belongs...
Those messages right there illustrate my point! Gandalf is pretty much the Wizard as far as looks and attitude go, and yet you have to do all sorts of contortions to stat him up in D&D because the meaning of the word "Wizard" is completely different in the game and in the Lord of the Rings (as are the magic systems!).
I guess this would be one of the reasons why proprietary iconic characters became a thing from 3.0 onwards .