How many of these avocado varieties have you tried? 95% grown are Hass. Here are 8 more types, which ripen throughout the year.
(californiaavocado.com)https://californiaavocado.com/avocado101/avocado-varieties/I've had a 25' Zutano that produced a couple bushels each year. All of those are worth trying if you get the chance. Probably not many non-Hass avocados make it out of California though.