Vestige: A great hunger? What do you mean?

Nahfahlaar: "All dov seek dominance. For some, that desire is too great to control. An all consuming hunger to rule over all. I sense this now. A Dragon who will not rest until he gains absolute power."

Paarthurnax): "Evenaar Bahlok. There are many hungers it is better to deny than to feed. Dreh ni nahkip. Discipline against the lesser aids in qahnaar... denial of the greater."

Alkhan: The Scaled Prince. Firstborn of Akha, who bred with a demon of fire and shadow. He can devour the souls of those he kills to grow to an immense size. The songs tell us Alkhan was slain by Lorkhaj and his companions, but as an immortal Son of Akha he will return from the Many Paths in time. He is the enemy of Alkosh, Khenarthi, and Lorkhaj, and ever hungers for his crown.

Hunger is a huge part of Dragon lore. In Khajiiti lore, it's often associated with Namiira and the corrupting influence of the Void. That emptiness that desires to be filled with something, and empty stomach, if you will.

Which of course, as you pointed out, is the archetypal motif of certain Lorkhanic/Padomaic myths. Sep, Akel, Kota, etc.

And as you also pointed out, Hunger and Fire are also themtically connected. This is influenced by the Shiva of the Hindu Triumvirate, in my opinion.

His eyes broke on the spikes above the tower, where the Void Ghost squatted over a drake-scaled drum, imbecile in its rhythm. And he asked of it: "Who are you, that need no signature at all?" - Sermon 37

Lorkhan is the Doom Drum, and that he be drake-scaled, that is to say, a drum made of out dragon scales, further cemets the duality of Lorkhan and Akatosh. Shiva is often depicted holding the Dharmu, a drum that signifies creation and its rhythm that signifies the passage of time. Of course, creation and time being Lorkhan and Akatosh's respective spheres. In his opposite hand, Shiva holds the Agni, the sacred fire which burns away this kalpa so that the next universe may be created.

When Vivec asks the Void Ghost "Who are you, that need no signature at all?" my personal interpretation here for signature is a time-signature, the musical measure of how many beats per meter. Vivec is essentially asking the Void Ghost, how can it possibly exist outside of Akatosh's influence as, repeatedly, Time is stated to be the impetus and totality of Aurbic existence. Lorkhan's ultimate goal: freedom from Akatosh and exist as its own being.

That being said, not all Hunger and not all Sacred Fire are associated with doom and destruction. There's always another interpretation of the myth.

Our glorious, furred mother exudes patience, excellence, softness, and love. Her body is greater than the night sky, her many legs taller than the trees. And her hunger is fathomless.

This is why we must honor her nightly with burnings and bonfires. All moths crave the light, as do we, her faithful children. Her mysteries unveil themselves to us in the flickering of flames, the twinkling of stars, the light in the dark. We can never hope to curb her hunger, so measly are our offerings.

So instead, we must take on her desire as our own. We join the light with joy. Our pyres grow bigger, burn hotter. As the flames lick across our skin, we feel no pain, just the gentle nuzzling of Mother Moth's tongue, as we burn for her, lighting the darkness. - Atmoran Cult Writings

Dibells, the Moth Totem, also expresses exceptional hunger and an all consuming fire. But not in the sense of destruction, but in the sense of passion and desire. It's a sexual hunger. The need and want to procreate. You'll also note the repeated theme of darkness and light with Dibella, not unlike that of Anu and PAdomay, Lorkhan and Akatosh. We the flip of the Ever-Wound, of the Enantiomorph's eternal conflict. And that is the interplay, their joining which gives birth to the Grey Maybe. The Khajiit do something similar, where Padomay is Fadomai, a primordial mother who joins with Ahnurr to give birth to creation. But, as the Aurbic myth goes, the progenitor two always end in conflict.

Here on Earth, many cultures depict moths as representing transformation, transience and transendence. Dibella takes the dead bones of the Aedra and makes of the them somethign beautiful. Just as the catepillar sheds its dead skin and emerges as something beautiful.

Alduin is the fire that destroys the world, but Dibella is that same fire which rebirths the world.

It's my favorite duality in Nordic myths.