After the rebellion, who most likely appears to become the leaders of the farm in Chapter 2? Please provide textual evidence.
In this chapter, we see the two pigs start to vie for leadership. At this point, it is quite clear that Napoleon and Snowball are the ones who are most likely to become real leaders in the revolution and in the society that will come up after the revolution. Squealer will be important too.
We can see this in the second paragraph of the chapter. There, we are told that the two of them are "preeminent" among the pigs. We are told that they are better than the other pigs -- smarter and more determined.
We are also told that the three of them are the ones who take Old Major's ideas and make them into "Animalism." From these things, it seems clear that they are to be the leaders.
Following the death of the wise, old boar, Old Major, in Animal Farm, two other younger pigs became the clear choices to replace him: Napoleon and Snowball. These two "were pre-eminent among the pigs." Napoleon was "large" and "fierce-looking... not much of a talker but with a reputation for getting his own way." Snowball was more "vivacious... quicker in speech and more inventive, but was not considered to have the same depth of character." These two pigs would battle it out as the future leaders of the farm before Snowball was exiled by the victorious Napoleon.