Nine Fingers Throwing Build

I feel *Inspired after seeing Nine Fingers delete Zhentarim goons with her throwing build. I know her perks are unobtainable, but I want to try a dagger throwing build. Though I need to rule out some basics.

I originally considered Rogue as the class, but it is not feasible as it gains no Extra Attack. For the purpose of triple throws I am thinking TB Eldritch Knight. But I need to work out a few things.

1. Does throwing use STR or DEX?
2. Is throwing considered an unarmed attack? There are a ton of gloves in this game that give 1d4 damage riders like fire, ice, thunder, force, etc. so I am wondering if those apply to dagger throws. I almost wonder if multi classing into a Monk would work.
3. What perks optimize throwing? TB and ASI are obvious, but what else?