There has never been a manager in history that led his team to the playoffs without commanding the respect of his players. Dick Allen was one of the best hitters in baseball in the 1960s and 1970s, but he was considered such a disruptive influence among his teammates that it's debatable how much he helped his teams. That's hard enough to identify, and almost impossible to keep bottled up for long. The problem stems from the real definition of chemistry. It's not just a team where everyone pulls for each other and the players share cabs back to the hotel.
Many bad teams have that.
They're not losing because of bad chemistry, but because they're not experienced enough, or not healthy enough, or just plain not good enough to win. If the Indians win the AL Central again this year, no one's going to attribute that to chemistry. They've won before. They're expected to win. That's not chemistry, that's just a talented team.