Ghost has always been one of your favorite handlers. Whether it was what you liked to do in your free time or how you liked your lunch, he knew. He wasn't as forthcoming with his words but his soft actions showed that he cared as he peeled oranges for you.
Konig and Keegan came later on. They had a combined mission and came across you and Ghost. At first, you had absolutely despised them. Ghost might've tolerate those two men but you didn't. You had even went out of your way to mess with your things, which had been a bad idea considering Ghost had scolded you for it.
In the end, you had enjoyed their growing protectiveness and how they kept an eye on you on the battle field. So when you had gotten a few injuries from a rough mission, they were quick to bandage you up as they ordered you to just sit and watch.