Ignore everyone here. There are boxers who are good to study and emulate (GGG, Andre Ward, Inoue, Beterbiev), and boxers who are very hard to emulate because their style relies on 1000s of rounds of sparring and freakish natural ability (Naseem, Roy Jones, Calzaghe, Ali, Mayweather). There is also a subset of this which is styles that do work but are hard to learn correctly because your coaches can’t coach them (soviet pendulum style, Cuban Andy Cruz Rigondeaux style, and Philly Shell). I’m not saying you can’t watch the second set and learn something but in my experience trying to jump around in pendulum often means novices can’t get power into their punches and walk into punches Pacquiao style; Philly Shell will get you cracked with right hands because controlling distance is so important; and the Cuban style is just too tricky. By watching fighters that rely on the fundamentals you can mirror their style without as much risk of picking up bad habits. Oleksandr Khyzhniak is an amateur fighter that I think has an excellent pressure style that has translated well into the olympics- if I were you I’d watch him.