Okay so rehash of what you already know or has been established but whatever maybe we'll think of things to add.
Al Rasputin: former Avengers buddies, congrats on the new job man but don't go do any fake betraying okay? He can't handle going through that twice.
Cliff Bishop: Womb in common! Technically cousin/bros, I think we said he has a more slightly awkward older/younger cousin relationship with Marvel. But he's glad the guy is back.
Cara Drew: Oh hey fellow SHIELD dude. Shockingly....she's finally more experienced in SHIELD stuff than someone. My god, she was the baby SHIELD person before now there's an old newbie.
Peggy Rogers: She hates you Marvel, you suck (Captain Marvel>Marvel shirts and all). Loathes the dude because of the post district-x stuff and this replacing Owen stuff. Won't talk to him probably XD Because she's not going to start shit and it's been a while but man oh man she still hates Marvel. (Sorry not sorry Owen) Nice thing about him being in SHIELD she thinks is that at least she's got a clear path with the whole Marvel named superhero schtick. 5 years and still bitter? ...Yeah totally.