Quiplash: The real bread and butter of jackbox. 2 players answer a prompt and everyone else votes on the funnier/more fitting response.
Bidiots: Drawing game where you attempt to bid on the "art" for the highest score.
Fibbage 2: Fibbage 2
Earwax: Respond to prompts with not your own words, but from a collection of silly sound effects, most of which elicit a giggle by themselves.
Bomb Corps: Cooperative game where 1 player gets instructions on how to disarm a bomb and must relay them to the other players within the time limit.