Yeah, Bucky will remembering seeing Clint around since I think he was here at the time I had Bucky. He'll just be surprised to see all of his adult kids running around.
He'd be friendly enough with Emma, though if/when he knows she's a telepath he may be a little hmmmmm though he does think her diamond form is badass. Telepaths tend to made him side-eye given what's in his brain. And a big NO TY to the phoenix force lol.