Bans, Sorted & by World - May

does unique bans mean the accounts that were banned? or just each character.
cus if not that still means that each person that gets banned may have 2 other characters on that account that got banned as well.

The account limit is 6, not 3. It's expandable.
That aside - When a character from your account is banned, all characters on that account are unusable. Its the account that gets banned, not the character.

They list by character name because those are what's recognizable, and supposedly are only listing the character that was active at the time the account was banned, so each of these characters supposedly represents a single account which may consist of 1 to 6 characters.