A couple of things to consider:
1. Were teams lead by a group of Juniors on varsity that will return for their Senior year more improved? [Examples: 2017 Logan, 2018 Palo Alto, 2018 Heritage, 2018 CVC, 2018 Los Lomas, etc.]. These are the teams you won’t know about.
2. Nor Cal teams have to wait their turns sometimes. Example 2016 Modesto Christian graduated a top Senior class; during 2017 Modesto Christian was very young and beatable. This year 2018 Modesto Christian was back to the Open Level. The same happened for Bishop O’Dowd, 2014 Open Division State Finalist, 2015 Open Division State Champs, 2016 Division III Nor Cal Finalist, 2017 Nor Cal 1st round and 2018 Nor Cal Open Division Finalist.
At the moment, I believe Bishop O’Dowd loss a lot. As for Logan, recently they have had some good Senior classes in 2015 and 2016 and they didn’t go far. The 2017 Senior Class was special playing great as Juniors under the class of 2016 Seniors. I don’t believe the Class of 2019 is on the level of 2017 even with the transfers although Hawkins.
The usual suspects are always at the top lately, Sheldon, Salesian, Modesto Christian, Bellarmine, Capital Christian, etc. The raise to the top is a 2 year process. Year 1 pretty good Year 2 Very good.