There are a lot of nimble builds in pvp actually, but so many people go with those first 2 you listed, or a hybrid of them.
Archers barely work in pvp, but you can have some fun with it if you know what you're doing!
Dark Souls PvP Assholery 6-Dragon Bow Baiting/Sneaky Avelyn-
Subscribe to this guy if you enjoy watching pvp videos, I love his videos quite a lot.

It's a very enjoyable challenge, and after about 5 billion deaths in the catacombs and Tomb Of the Giants I beat Nito (first try... -sigh-)and am now cowering in a small corner afraid of every other area.
This no-shield thing is really starting to reach it's outrageously difficult parts.
I recommend giving it a shot though, it's quite a lot of fun (Though a lot more viable in early NG+)
I would also recommend the dark-wood grain ring asap in that kind of build, since your only form of defense is dodging and parrying.
The parrying dagger and quelaags furysword work great, though go with what's light and looks coolest.
A good bow is also a godsend in certain parts of the game, where I would recommend the long-bow or Black Bow of Pharis.
Start with the thief or wanderer class, and try to stick below 25% weight until you get the dark-wood ring. Then you can really free up your armor.
You want a quick short-range weapon, I weapon with more range, and one with some uumph for staggering tougher enemies.
Obviously, a dex build is the most viable, or an hp gauged elemental weapon build (though the latter really takes away a bit of the charm)
If you want even more of a challenge, play it like I am and cap your vitality at 30. Oh you'll get good at dodging really fast.
For rings other than the dark-wood, I would go with Havels, Clover, Wolf Ring (a MUST at certain points), and maybe hornets ring if you get confident with parries and backstabs.
It's a lot of fun, and also, do it without summons for the full effect. You will definitely see the bosses in a new light if you do so.