I really loved the Path of Ancestral Guardian and the Path of Zealot.
The Path of Ancestral Guardian seems to be the true tanker. He not only is tough as a typical Barbarian, but he makes his allies uninteresting targets; disadvantage to attack your allies and damage resistance to them (3rd level), damage reduction to them (6th level) and a force-based damage retribution for who dares to attack them? That said, I wonder who else has tanking abilities better than these.
The Path of Zealot is what the Berserker Barbarian should have been. He's basically a Divine Berserker. He deals more damage, can reroll failed saving throws once per rage and refuse to die and just can keep fighting even if he's technically dead as long as he's in rage. On top of that, he trivializes spells to bring back the dead (no material component required) and can buff his allies once per long rest. Man, this Path has no "ribbon" ability!