Some alliances have more than 2 years.
I think the names member, ancient, co-leader and leader is a bit obsolete.
Let give more names for those who has a specific role in the ally, or just for fun.
Leader (same role)
Leader in the shadows the hand of the leader
Leader Chamberlain for those who takes care of the ally when the leader is off.
The council for those who count or list flags used in wars and titans.
The ancient list
High command very important persona.
Lieutenant the person who helps always to everybody.
Loyal soldier a common ancient.
Also for specific roles.
Titan slayer the titan high scorer.
Top raider always needs more cups.
Summoner for the lucky ones in summoning.
** Intelligence officer** for those who brings news of the games.
Elder we trust in that person.
Member the title when you enter in an alliance.
Voyager he/she will travel to another alliance soon if his/her behaviour doesnt change.