I actually do not find any difference in Raghav character growth. He was, is and still Don Raghav Rao. Its just previously he was alone, his anger and insecurities come out in public as Gundagardi.
He never meant anything bad to others, its just he misunderstood Pallavi and there was no one to correct or enlighten him. Now he is in a good space, family is together and happy. So his anger and insecurities are managed well.
He can go any length for his family, he put Pallavi in front of truck, but wasn't going to kill her. He maligned her character, but assuming that she was the cause of Kirti trouble.
He was, and still is impulsive. He still make wrong judgment about people, example Sunny. He still is the Don, during Soluchana getting caught for theft but because of Pallavi, he just thereafter her. If old Raghav would have sent her to jail.
Last time Pallavi was outsider, now she is family. And if Pallavi had hit and run someone, he also would take the blame on himself, but would not let any harm on her.
He was and still is impulsive, and a little dumb when the matter is family related
If non family, he is Don.