1. Moses Malone
2. Elgin Baylor
3. Bob Pettit
Moses is my top choice here.I actually have him slightly ahead of Dr. J because if Dr. J put up those numbers and had all of those accolades in the NBA, he'd have a stronger case. But his fist few years he did it in a slightly weaker league, the ABA - I only say slightly though. The ABA did have some very good teams and have a good amount of talent, but wasn't quite as good as the NBA, as evidenced by the Doctors individual stats and team success suffering a little bit after he went from ABA to NBA.
Moses meanwhile, matched up very well vs Kareem (the no. 3 GOAT according to this board), leadings his team to wins over Kareem's Lakers in the playoffs in both 81 and 83, leading his team to the finals in 81 and sweeping the defending champs Lakers in 83. Yes, Dr. J was on that 83 Sixers team but Moses was the MVP of the league that year and finals MVP. Moses won 3 NBA MVPs compared to 1 for Dr. J. Yes, Dr. J won 3 ABA MVPs, but again, it depends how much you value the level of competition in the ABA. IMO, 3 NBA MVPs is just as impressive as 3 ABA MVPs and 1 NBA MVP - possibly more.
Dr. J was a better defender and passer, but he was by no means GOAT level at either defending or passing, whereas Moses was a GOAT level rebounder.
Baylor gets the slight edge over Pettit because Baylor was faster, better passer and better ball handler. And in terms of impact, Baylor was Dr. J before Dr. J. Baylor was Connie Hawkins before Connie Hawkins. Jordan modeled his game after Dr. J, as did Dominique Wilkins. Kobe and LeBron modeled their game after Jordan. Baylor was a pioneer. He paved the way for all of the explosive, big, strong, athletic wings to come later.
And speaking of impact, you could also make the argument that Baylor is the one who invented the euro-step:
Also, Pettit's crowning achievement was his 50 point, 19 rebound game to led the Hawks to the win in game 6 over the Celtics to clinch the 1958 NBA championship. However, Russell only played 20 minutes that game because he had a severely sprained ankle suffered in game 3 of that series. Baylor meanwhile, scored 61 points and pulled down 22 rebounds to lead the Lakers to a win over the Celtics in game 5 of the 1962 NBA finals, so Baylor put up better numbers and did it against a healthy Russell who played all 48 minutes of that game. Baylor also played all 48 minutes that game. Jerry West? He had 26 points, 4 rebounds and 0 assists.
Baylor is the best all-around player left on the board IMO when you take into account his scoring, rebounding, passing, defense, ball handling and ability to score/defend both inside and outside.
Baylor and Pettit are both very close and it's definitely debatable which was the greater player. I think both have a case to be top 20 of all time. Scary to think how good they would have been if they played in the modern era with the advantage of 50 years of advances in basketball skills, more favorable rule changes, less days off between games, better equipment, better facilities, better weight training, better nutrition, better sports science, etc.