system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Who were the Avengers Initiative in 2008?

In 2008 Nick Fury tells Stark, "You've entered a bigger world" that he's not the only superhero in the world.

So who's he talking about?!   Barton and Romanov would have been agents at that time, sure, but not really "superheros",  Rogers is still under the ice, Banner is hiding somewhere and a pacifist, and Thor he's a myth, no one has seen him in like 1000 years.

We've seen others with powers on Agents of SHEILD that might have had powers at that time, but they're all locked up.  

Basically, who's Fury talking about!?
gpt
Iron Man and Hulk were probably the big players.  Ant-Man potentially, depending on if anything's revealed about Hank Pym previously using the suit.  Cap was definitely known of by SHIELD, but wasn't known to be alive when Fury first met with Stark.  They may have even known about Matt Murdock's enhanced senses, even though he only became a vigilante after the Battle of New York.  Other than that, not many superhumans from that time are known of, at least to the general public, most appeared later on.