Let's see....
...I have three "mains" (aka, characters I roleplay with, have a detailed backsatory more then one line long, pay most attention to and really care about; actually supposed to be only two, but my prime crafting alt kinda grew on me, so I decided to promote her to "main" as well...)
Leskandera the dunmer nightblade bounty huntress
Kelasendar the dunmer sorceror goth librarian
Kes dre-Lana the orsimer blacksmith amazon

And then I have eleven more alts...
Seklandera the bosmer nightblade lycantropess
Laaskerden the argonian "draconian" dragonknight
Andrea Selk the breton nightblade vampiress
Deslankera the altmer healer templaress
Akar-Sendel the nord sorcereor thunder priest
Alakserden the dunmer pyromancer dragonknight
Elsa Dekran the imperial pirate templaress
Kera de'Saln the khajiit battlemage sorceress
Al'Serkande the redguard dragonknight bandit
Karel Danes the nord mountain man warden
Selkendara the bosmer treehugger wardeness

...nine of them are at champion levels, three at mid fourties, and the wardens both below ten in levelling...

Most of them I made as "testbed" characters (now that the one I had intended as crafting alt became more or less a third "main"), see what a class can do, try out how it works with a diffferent gear and armor setup, grab an special vampire or werewolf dye achievement, etc.
...and two of them are kinda duplicates in character setup due to wardens coming later (the second bosmer and nord characters), so the old ones are sort of put on hold, and may get redone someday if I get a better idea (or they add a new race to the crown store - I'd love to redo Akar as maormer stormcaller instead, or Selka as gobbo or something...)