优先排序的列表在合并

我有两个相同类型对象的列表。

一个列表来自系统管理员，另一个列表来自查看页面的用户。

这些列表必须在某些时候合并以查看，并且列表排序的值position很可能具有冲突的值。

是否有一种方法可以合并两个列表，并且当发现相同的值时，将较低(因此更好)的位置提供给管理列表?

例子

class info
{
  int position;
  string title;
}
List<info> adminInfo = new List<info> 
{
  new info() {position = 0, title = "adminOne"}
  new info() {position = 4, title = "adminThree"}
  new info() {position = 3, title = "adminTwo"}
}
List<info> userInfo = new List<info> 
{
  new info() {position = 0, title = "userOne"}
  new info() {position = 3, title = "userTwo"}
}
List<info> PreferentiallySortedList(List<info> adminList, List<info> userList)
{
  //Some kind of magic here
}
//Looping through PreferentiallySortedList and displaying 
//the title of each item should return the following:
"adminOne"
"userOne"
"adminTwo"
"userTwo"
"adminThree"

return adminList
   .Select(info => new {Priority = 0, Info = info})
   .Union(userList.Select(info => new {Priority = 1, Info = info}))
   .SortBy(u => u.Info.position)
   .ThenBy(u => u.Priority)
   .Select(u => u.Info)
   .ToList();

List<info> PreferentiallySortedList(List<info> adminList, List<info> userList)
{
    return adminList.Union(userList)
                    .OrderBy(u => u.position)
                    .ThenBy(u => !adminList.Contains(u))
                    .ToList();
}