Ok Guys! I know you might struggle to think of donor ranks for your server since most servers use:
Warrior
Assasin
Warlord
And stuff like that, It gets annoying since you don't know any other names to come up with! Well i'm here today to save you! Instead of searching over millions of websites and servers trying to find unique ideas and names, You can just come here and i'll give them you,

Ranks for $5 could be something like:
Ranger <-- This isn't a custom name i used this on my own server that i got form one my friends.
Archer <-- This is used on some servers, Which you might get annoyed at!
Hunter <-- Same with this, This is used on a few servers.
Ranks for $10 could be something like:
Overlord <-- This is used on literally every faction server!
Deathlord <-- Not used on any servers that i've seen.
Ranks for $20 could be something like:
Bandit <-- Used on some servers.
Vanguard <-- Used on some servers.
Ranks for $30 could be something like:
Sentinel <-- Used on not many servers.
Thief <-- Used on a few servers

^ I will try get some more ranks like these, The updated list will be under this called "Ranks Part 2" So stay tuned for that!

Ranks Part 2:
Wither <-- Up to you what price and if you use it! (This is used on the Archon)
Enderdragon <-- I've never seen this on any servers its a cool idea.
Shark <-- This is used on a few servers but it sounds cool!
Walrus <-- Up to you its a bit of a terrible name!
Legend <-- Seen on a TON of servers.
Slayer <-- I think i've seen on 1 server before.
Champion <-- Pretty good never seen on other servers.
Honored <-- Never heard on other servers.
Elite <-- Used on some servers!

I hope this helped you, If you want me to make more ask me and if you want the rank config file ask me and i'll put a download link at the end of this, Talking about that it will only be in group manager since i hate Pex, I know you guys might prefer Pex over groupmanager but i sadly don't

I don't reccomend adding ranks like these since now that i've posted it most of you guys might either give it to someone or use them, So if i was you i'd use these now! Since you could but one of the first people to use them, Also don't make it pay to win make your server fair, If you donate its mainly to support the server not for in-game items since of EULA.
Most people will get annoyed if you make the server P2W since they will not be able to do anything at all since they will be constantly killed when they leave spawn or make a base.