Hey Patrick,
I don’t believe we have much data collected in terms of early, mid and late season Mango varieties for Southern California.
Warren is very knowledgeable and may have more information. In our colder climate, our fruit hangs on the tree for extended periods of time and our cooler weather also triggers secondary and even tertiary blooms.
For some varieties like Maha Chanok and Sweet Tart, we can oftentimes get an early crop and a second later crop.
In my yard, I have noticed that Glenn seems to be one of the earlier varieties year in and out. Maha, Edward and Carrie can be early to mid season but if the first or second blooms get frozen back or there was no fruit set, the third blooms can produce late season fruit instead.
I have noticed in Leo’s yard that the larger fruiting varieties seem to ripen later in the season. Right now is prime harvesting season in Leo Manuel’s yard.
I currently have Cotton Candy, Peach Cobbler and a single Lemon Zest still hanging on my trees.
This is a great thread and I hope we can gather more information from other SoCal growers so that we can make better recommendations in the future.
Simon