2. Luke Skywalker
He became one of the most proficient Jedi to defeat Darth Vader. In most of the Padawans, he entered the lot quite late and we don’t actually know much about what he was up to between return of the Jedi and The Force but all the indicators explained that he is one of the most powerful Jedi that makes him fall at number 2 in the list.
Yoda is the strongest and most powerful Jedi to have ever lived in the Star Wars family. He is amazingly and incredibly wise and clever when he is compared to the rest of the Jedi council members. Moreover, his swordsmanship is second to no one even when he was 900 years old. He also hold the title of being incredible in the skills he mastered as he is the only one who can go beyond the grave and join the ghost force. Plus, he is the only Jedi who stayed alive over the 9 centuries, what do you think? He must be doing something great and right.