Thank you. Apologies if I come off as rude, please don't hesitate to say so. Also I'll be speaking out of order, I'll highlight when I start talking about another Method.
There are some issue I need to explain. First off in your
Second Method, the black dot you see is not the size of Shigaraki or the Nomu, it's just an effect of the clap. Unless you believe Star and Stripe crushed them into a diamond shape. Also I believe you should use the official scans which have a higher quality.
You cannot use that as if it's their size, as it lacks their shape and is clearly a special effects for Star and Stripe's clap. Shigaraki and the Nomu are not visible there and cannot be used for scaling. I hope to convince you of this fact,
if you take a close look you'll see that it clearly isn't them.
You also provide no reason why we should believe that black dot is equal to them in size. Since we cannot see them after all. As such we can say they're smaller.
For your
Third Method. You cannot see the full size of the hole when Star is preparing her laser,
in this panel you're using. So your measurements are incorrect, that is not the diameter as the hole very clearly goes offscreen and likely by a large amount judging
by the size shows here.
For your
First Method. The hole you're seeing in that panel is smaller than the hole made from her clap, the reason is simple physics. Do you know what Star and Stripe did? She created a massive pressure/shock wave by having her giant clap, this wave blew away everything in the area.
When a large volume of air is dispersed, it creates a vacuum. This vacuum wants to quickly get filled with air, at a noteworthy speed around
365 meters per second, giving it more than enough time for the hole to get smaller between panels. it would take a bit more than a minute to have mostly closed the hole in the sky.
"
Why wasn't the hole filled completely then"? You might ask me?
That's simple, the vacuum not only sucks air in from the sides, where the clouds reside, but also from above and below. Needless to say, pushing the clouds enough to create a vacuum would not necessarily mean that it would suck in all those clouds as they were before, since there is plenty of air to take from all directions.
The hole in the clouds is obviously bigger at first and gets much smaller as the vacuum gets filled.