I just ran this and it seemed to work:

var gr = new GlideRecord('sys_user');
gr.addActiveQuery();
gr.query();
var count = 0;
var x = gr.getRowCount();
var curuser = gs.getUser();
while(gr.next()){
	var user = curuser.getUserByID(gr.user_name);
	if(user.hasRole('view_changer')){
		gs.print("** " + gr.name + " has role");
		count++;
	}
}
gs.print("** Found " + count + " users out of " + x + " with role.");

Find all roles that contain view_changer

Navigate to sys_user_role_contains.list and search for the role view_change

Find all groups that contain view_changer

Navigate to sys_group_has_role.list and search for the role view_change OR whatever roles you identified that contain the role

Find all users that have the view_change role

Navigate to sys_user_has_role.list and search for the role view_change OR whatever roles you identified that contain the role