Jeef Curve

Fundamentally Jeef curve stays on Tavern 1 on turn 2 (4 gold), and then levels on turns 3 (5 gold) and 4 (6 gold).
Jeef curve aims to take advantage of strong tier 1 minions, while still leveling up to tier 3 relatively quickly.

Any hero when provided with the correct tier 1 minions.

Tribes:
Jeef curve wants Tribes that provide strong tier 1 and tier 3 minions: Mechs, for micro mummy on tier 1 and deflect-o-bot on tier 3; Quilboars and Dragons for their strong tier 3 minions; Pirates for deck swabbie on tier 1 and briny bootlegger on tier 3.
Usually economy tribes negatively affect jeef curve; though you will need one economy card to optimally play jeef curve, the presence of murlocs/beasts/elementals makes tier 1 significantly better, making warrior curve more attractive, and makes tier 3 minions worse on average.