Donating means you get access to the same perks on all servers. There are personal perks to donating as well as global perks when the target is met.
Here is a list of personal perks you receive upon supporting the server.
Here is a list of global perks every player receives upon reaching the donation goal (Donations not done though Patreon will still be counted but may not be shown).
You will need to message Ki-Tan in Discord for the in-game role.