Angry foster kids who just want to feel wanted and welcome.
Wrench.
"Groomed from a young age to kill at another man's behest," Wrench's situation will remind Daisy quite a bit of Grant Ward, her former teammate and SO who turned out to be Hydra. She took Ward's betrayal personally, and it wasn't until she met an alternate version of him who was taken in by a SHIELD agent instead of a Hydra loyalist that she understood the good he was capable of.
The possibility of Daisy learning ASL to any level of fluency is pretty slim, but she'll put in the effort to learn some basics. The rest of the time, she'll likely rely on her phone to communicate with him. (She's a millennial hacker, so her phone is basically another appendage.)
clustermates.
Blake.
Wrench.
Fox.