Here's where I'll stop for the moment. Human Extinction attack looks neat.
Not too much to redress here, but for a few things.
It is indeterminate how strong Shin/Supreme Kai is. He states that all the Kaioshin would have been strong enough to destroy Frieza with a single blast. But he is also weak enough to think that a rusty and not full power SSJ2 Gohan would nearly be beyond his power to contain.
So what does this mean? It would seem that Super Perfect Cell would have to be strong enough to delete Frieza in a single blast, since Gohan is established to be weaker than he was during the Cell Games.
What I think it also means is that Final Form Frieza is probably a bit beyond Base Buu Saga Goku, but that Kaio-Ken would be enough. This roughly lines up with what we see elsewhere.
Also Vegeta and Kid Trunks train in 150x Gravity, though based on Vegeta's dialogue and Trunks being in base, he might train at even higher alone.
Oh there is one thing to bring up from the Cell Saga. Mastered Super Saiyan/SSJ Grade 4 does not seem to be stronger than regular Super Saiyan but rather wrangling the emotions of the form so that it can be maintained while calm and also at unnoticeable/nothing levels of ki.