[Thalion]

I think Beorn (and possibly his race) should be higher on the list...Dain, Balin, and Thorin Oakenshield were all at the Battle of the Five Armies, yet it wasn't until Beorn showed up that they really had a chance of winning ("But even with the Eagles they were still outnumbered. In that last hour Beorn himself had appeared......he seemed to have grown almost giant-size in his wrath"..."The roar of his voice was like drums and guns; and he tossed wolves and goblins from his path like straw and feathers. He fell upon their rear and broke like a clap of thunder thorugh the ring." He also kills Bolg himself ("crushed him") which finally caused the goblins to be dismayed and flee the battle)...

...No other person or being saved the battle from loss (or at least thats how I read it)...even though these other great dwarves were there...I would still account Gimli higher than Beorn because of his special context and the fact that he is allowed to go into the west with Legolas, but Beorn deserves to be placed above Dain, Balin and Thorin who were all at the Battle of the 5 Armies yet didn't turn the tide...