Lots, but almost always full berserker of some sort. The only builds I haven't really messed with in PvP are full bleed/condi ones. D/P steal with mug and stealthseeker is a blast.
My favorite is S/P burst for bunker buster/interrupt-type dps.
This would be the closest "meta" one I've seen, though I do not use the Lyssa rune/Basilisk combo, which is great and definitely worth considering for condi removal (I retain Hide in Shadows and take more of a "live to fight" approach if I run into condi spam alone). killing people during the recharge on their heal skill after interrupting it is one of those things that will never, ever get old to me. I also find Infiltrator's Strike/Return to be one of those skills I feel totally naked without in PvP, so more often than not I forego the big numbers from backstab.
I have some ideas for tweaks to my S/P build I'd like to try out tonight too based on
this tankier one... still don't plan to forego any damage, or use Lyssa runes, but I might try Signet of Agility + Signet use trait, Sigil of Paralyzation, and/or switch hide in shadows for withdraw, see how it feels to change up what I use for condition removal and rely less on stealth. Since Tactical Strike is split from PvE to just 1.5s in PvP I might be okay neglecting stealth and focus on being able to pump out an extra, lengthened stun Pistol Whip instead, maintaining a pure damage focus.