supernatural - What are the tiers of angelic and demonic ranking?

There are some clear divisions of power in Supernatural, amongst demons and angels.

Who is at the top of the chain for both? Who are the next few significant ranks?

I know at the top for Angels we have

Lucifer -> Michael and Gabriel....

And demons I think we have/had:

Azazel ->Lilith->Crowly?

But I'm not certain.

Answer

This is rather crude, a lot of it comes with caveats, I left out a ton of entities and am sure I've forgotten some relationships. Most of the information is from my own memory and supplemented by the Supernatural Wikia.

In general, Entity 1 → Entity 2 means Entity 1 is more powerful than Entity 2.

Other "relationships", like War being above Pestilence in the image, don't mean anything - that just happens to be where they were placed.

• Death claims to be older than God, and that he will reap God when he dies. This relationship is uncertain, though, given the sheer age of it.


• Leviathan and Castiel is questionable, since now that they're not organized, Leviathan are, in Crowley's words, just a difficult-to-kill monster, mostly like any other.


• Michael is the one who trapped Lucifer originally, and is the one prophesied to kill Lucifer.



• Castiel and Famine? Hundreds of hamburgers.


• Alastair once captured several reapers and was prepared to kill them.


• Hellhounds can easily kill demons, but it is unknown how high up the food chain. The black-eyed demons tend to be the weakest, so that's where I put them.


• I've put the Mother of All above Castiel, since we know she's older than angels, and can block their powers. However, I don't recall her interacting with the Archangels, so they may or may not be immune to that ability.


• Update 2014-01-09: This was a long time coming (like, the entire past season), but I forgot about this question/answer - now that we've finally met Metatron, we know his strength/power level is actually much lower than other angels. He supplements that with immense knowledge due to having written the Word of God tablets, but he needed Castiel to actually do anything.

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_{For the sake of allowing anyone to be able to edit the image, I generated it using Graphviz, with this dot file.}