I used the MaxPreps rankings that were updated to include the first round of the playoffs to come up with rankings for the leagues in terms of toughest to play in (average ranking of all teams) and strongest in the playoffs (average ranking of top 3 ranked teams)

Strongest
1. South Coast
2. Marmonte
2. Trinity
2. Sunset
5. Ivy
6. Foothill
6. Mt. View
6. Century
9. Moore
10. Inland Valley

Playoffs (Playoff record)
1. Trinity (4-1)
2. South Coast (2-3)
2. Marmonte (3-3)
4. Foothill (4-1)
4. Sunset (2-2)
6. Moore (3-3)
6. Ivy (1-3)
8. Mt. View (2-2)
9. Century (2-3)
10. Inland Valley (1-3)