Hmm, like for front 'day time' alters (ones that deal with every day life rather than trauma events) typical splits or types of alters or expressions of human tendency or sense of agency are:

an unemotional alter who can deal with intellectual pursuits
a child alter who deals with attachment
a protector alter who keeps people at bay
an alter who fills a particular role (mother, worker)

some kinds of splits are common regardless of the type of trauma experienced because they are trying (in vain, often) to meet the basic human needs.