There are some barbarians that doesnt expend their rage in just screaming and attacking, Elements of the protector is a long time tradition between some barbarians who are able to control their rage and protect their own people.

 

Art of the protector

Starting when you chose this path at 3rd level, your rage becomes peace. In this state you control the power of the rage using it to protect, all attacks that successfully hit on a creature will draw a rune in any weapon you have.

These runes may be expended as a bonus action to heal you or another creature of your choosing within 30 feet of you. You have a maximum of 10 runes at all times. At this level the runes heal for 1d4 plus your proficiency bonus and Barbarian level. The healing increases to 1d6 with your proficiency bonus and Barbarian level at 6th level, again to 1d10 with your proficiency bonus and Barbarian level at 10th level, and finally to 1d12 with your proficiency bonus at 14th level.

Calm mind, rage is under control

Beginning at 6th level, you can’t be charmed or frightened while raging. If you are charmed or frightened when you enter your rage, the effect is suspended for the duration of the rage.

Feel my pressence

Beginning at 10th level, you can use your action to frighten someone with your menacing presence. When you do so, choose one creature that you can see within 30 feet of you. If the creature can see or hear you, it must succeed on a Wisdom saving throw (DC equal to 8 + your proficiency bonus + your Charisma modifier) or be frightened of you until the end of your next turn. On subsequent turns, you can use your action to extend the duration of this effect on the frightened creature until the end of your next turn. This effect ends if the creature ends its turn out of line of sight or more than 60 feet away from you.

If the creature succeeds on its saving throw, you can’t use this feature on that creature again for 24 hours.

Mirrored

Starting at 14th level, when you take damage from a creature that is within 5 feet of you, you can use your reaction to make a melee weapon attack against that creature.

Art of the Hunter

Beginning at 3rd level, you can use the runes to increse the damage to enemy that charged that rune (bonus damage scales as Healing runes does). Marking an enemy after 10th level with a rune will expand a fog cloud that turn you or one ally within 20 feet of you invisible for one turn. 

Art of the Shield

Beginning at 6th level, when you take damage while raging you charge another healing rune. You may then use your reaction to consume a healing rune and heal yourself for an amount dictated by your Barbarian level.  Starting at 14th level, you gain the ability to use your reaction to consume a healing rune to heal a creature within 10 feet of you for an amount dictated by your Barbarian level.

Art of Speed

Beginning at 10th level, as a movement action, you are able to increase for a short time your speed and jump power, gaining 40 feet of movement in one direction of your choosing during one turn of combat. (Out of combat you can only use this art if u have a rune charged)

Art of the Creator

Beginning at 14th level, you are able to use your action to stabilize and heal a creature at 0 hit points or less by consuming a healing rune. Doing so shrouds the creature in spectral fog and any attack roll made against this creature is made with disadvantage.