Yup, 3 unlit torches get.
All the weaponized equipment is treated as improvised weapons. Unless you have the Tavern Brawler feat, you aren't considered to be proficient with improvised weapons. As far as attribute, you make a ranged attack. It's a bit confusing considering it's not a weapon, so it isn't a melee weapon or ranged weapon attack. I'd probably go with Dex since you're not really relying on strength for the attack. You're tossing a clay jar at someone and hoping for oil to coat them.
FF has it. It's spelled out in the equipment section.
It is an improvised weapon, you make a ranged attack (dex as it has no special rules to trump the standard ranged attack rules). Range 20ft.
Technically the rules only cover splashing then burning, but I'll allow you to throw a lit pint to ignite it when it hits.
Yeah, I think the general reading is "Is it on the ranged weapon table?" so snowballs not so much.PS: I'm somehow expecting that the archery style doesn't apply to snowballs. Are they technically a ranged weapon? ;-)