Across 2,507 ranked games on patch 16.21 in Master and above, Lee Sin mains win 52.7% of their games in the jungle.
Their most common build appears in 62.0% of those games and wins 53.9% of its 1,554 games.
It starts 
Scorchclaw Pup and 
Health Potion, completes 
Eclipse, 
Black Cleaver and 
Death's Dance in that order, and takes 
Mercury's Treads.
Two other builds are played often enough in the jungle to be measured on their own.
In the jungle, Lee Sin mains fare best against 
Ambessa (won 78.6% of 14 games), 
Rengar (won 65.6% of 32 games) and 
Talon (won 61.2% of 49 games).
Their hardest matchups, the champions that counter Lee Sin, are 
Wukong (won 29.2% of 24 games), 
Kayn (won 36.4% of 33 games) and 
Taliyah (won 40.8% of 49 games).