Ascended Power levels

is easily the strongest ascended given that he defeated Nasus with ease and his entire plan was about absorbing more celestial power than a regular ascended.

Next would be because I remember them confirming that if he has enough bodies to work with he could actually overpower Xerath, so while he is not always in a state where he is more powerful he certainly has the ability to achieve one.

After those 2 I'd say might be the most powerful as we've seen him raise an army and a city out of the sand, though I think that his powers are limited to Shuriman territory, making him extremely op in shurima, but he'd likely end up as the weakest ascended outside of it.

After those I'd say & are next since they are ascended warriors who still wield their full power.

I guess that & Rhaast are the weakest of the bunch since they lack their (almost) immortal bodies and they aren't as powerful as aatrox either. However if these 2 were in their prime, they would likely be even stronger than Nasus and Renekton, as they were so powerful that even the aspects didn't know how to kill them.

I would put both and on the same level because their power is still very much physical

and above them i'd again put and on the same level because Azir crossed over from death and Xerath's power literally tore his mortal form apart

Once varus ascends to his true form and earns his second a he will be the strongest ascended/darkin of all

Aspects are technically "Ascended" too under the newer definitions of Ascensions but they are all weaker than the Shuriman Ascended so I will rank them separately

Way harder to do because the Targonian Aspects are mostly featless besides Zoe and her reality bending powers and Pantheon going manmode in his color story. Kayle feels like she should be one of the strongest but she's on par with Morgana and they are only the children of an Aspect so its harder to gauge them. Take that with a grain of salt.

The Ascended we know of are Azir, Xerath, Nasus, Renekton, Setaka, Horok, Aatrox, Varus, Rhaast, Ta'anari, Syphax, Zigantus, Xuuyan, Shabaka and Shabake, Valeeva, Naganeka and Enakai. Most of these are from Twilight story (so many are throw away). Am I missing any?

I'd put Xerath first, followed by Nasus, Renekton, non-Darkin Aatrox. The rest could just be all together as we don't really know their power.

Shabaka and Shabake sealed the Void, but this was with magic, not their power. So maybe they would be above the others.

EDIT: I missed Cebotaru from the TofGs story.

From strongest to weakest I'd rank them (excluding those not in the game) / /

I'm a little unsure about Varus and Rhaast, since we don't know a lot about them. But since everybody else except Xerath has been said to be close to "perfect" ascended, I think they're beneath them.

Xerath > Azir > Nasus / Renekton > Varus / Rhaast

Aatrox's power depends on the amount of bodies he has access to. With sufficient flesh, he could be on the level of Xerath. Generally, I'd put him between Azir and Nasus / Renekton.

And no, being resurrected is not a feat. Sorry.

As the lore power levels guy, I would recommend checking out my lists on the Subreddit. I attached a link to the rest of the posts in which you can see the power of each Ascended on display. In short, they are all top 15 for power due to near immortality, insane durability, a healing factor, along with insane physical and magical strength.
If I was to rank them: / both are debatable for the top spot. Really no debate here In that order, except the top two spots which are up for debate.

is top because he's able to defy the plane of existence and travel through time.

is a pacifist so he gets a huge debuff to his power.

is dumb so he gets a huge debuff to his power

emo so he get's a power buff.

because he's emo, but everyone knows mages are weak

because he's able to fit two men inside of him at once.

because he was defeated by a boy.

i think that's all of the champions that I know of that are labelled as ascended or darkin right?

Here is my list:

Infernal - I know, its not canon, but technically speaking, he says that he is an Ascended... so he is double Ascended with a lot of "fuel" (flesh or sand) Horok, maybe i overstimate this one Setaka Current before being trapped in a blade before the destruction of Shurima Rhaast, Varus, Valeeva before being trapped Ta'anari, Syphax, Zigantus, Cebotaru, Xuuyan, Shabaka, Shabake, Naganeka and Enakai before Current Current Rhaast after taking control of Kayn with no bodies to use aside from his current host Shadow Assasin wielding the "sleeping" Rhaast Current Current Valeeva ????

Ascended as in only champs? Or are other named Ascended included? Are the Darkins in current form or pre-imprisonment?