A's regen is tied to his shadows and his power. If he loses one then he will have reduced strength.
The 7th angel has all 6 of the other angel's abilities plus its own wacky woohoo things like destruction and distorting in its purest form due to being the law that keeps the underworld from dying.
It distorts ALL things apparently.
A could take down 4 angels with his neutral special the gun but was weakened overall. Lily ofc killed it in one blow.
Lily in base form resisted the tick toe side H*es and their memory projection which could break and manipulate minds.
Edison looks at the world of the underground like a sandbox and gave form to their deaths which are the angels.
Alan left a small cracking power in A so Lily could use it to not only bring Lily back from nothingness and give her form. What she says with it will give her form since cracking manipulate all matter. It helped her return to edison.
Edison has a clock that repeats everything as he wishes (The mega engine clock). It affects even the surface and underground at the same time and he likely can turn back as many times (It's also the fact he ate Yog).
Lily has the gold from Azathoth as it seems in this cycle AZTT helped Lily and betrayed Edison (who had the largest fragment).
Extra stories
Tesla's light is said to be all annihilating but well...expect a stomp.
Lily can dream walk which shows us having countless of worlds. She can even cross space and time with this (so she can arrive at places like Inganock before the mist came out).
Hypnos's bar is where "Dreams of the end" go to
Jaguarman Nagual (could be cracking but idk)
Tick tock man doesn't care about the order of events and can shove visions of the future to drive ppl mad. He gave a mask with the old ones power but the wearer's mind was being torn.