Silver surfer isn't a job title. Heralds are the job and many are shiny. You don't say "all" unless it's more than 2 so she's told us that there are at least three versions of the silver surfer in the film (multiple realities/convergence issue) and I'm sure she's not from the main timeline so by the end Norrin radd's silver surfer should be entering the MCU by the end of the movie or at least alluding to it. He's a huge character that cannot be messed with because of the fanbase and history. If its not broke...

Rogue has beaten Captain Marvel almost every time. Plus now she Rogue has Wonderman's ionic based powers which makes her strong as Sentry on top of her absorbing powers. So Rogue wins nearly every time against Carol Danvers.

Omicron level. I think Beast coins the term for Miranda the mutant girl who writes alters realities and rewrites histories and is even aware she's a character in a comic book. She's the only omicron level so far as I know