Shardstone
Hero
Sorry, but I think that's a narrow minded approach. Flexible rapid attackers with a gear focus make for great warlords. Odysseus is a great warlord and a great fighter. I'd like to see a Warlord whose also a Champion but can lead people to greatness in combat too.There's no need to combine them. They don't automatically overlap. A warlord could be a crummy fighter with good ideas.
Mechanically, fighters are flexible rapid attackers with a gear focus and barbarians are narrow hard attackers without a gear focus.
So, I think the Fighter X Warlord makes the most thematically interesting idea. You can play it as Fighter or as Warlord as you want it, too, much like how the new Warlock can be a gish or unique caster.