Avocado identification?

[AlwaysHotinFL]

A small branch on my inlaws tree broke off early=82 avocados collected. Needless to say it's very productive. I know we try to identify mangoes all the time. Didn't know if you could do the same thing with avocados.

Trying to identify the parent plant- it is a seedling from a commercial avocado bought in FL about 15 years ago.
A watercado (large variety)
When ripened off the tree the skin turns purple.

Here's some pics

[DocFruitFly]

If it's a seedling then that's what it is. Seedlings produce genetically unique plants - every seedling is a new cultivar so you can call it whatever you want.

[AlwaysHotinFL]

I figured as much which is why I'm more curious about the parent variety. With Mangoes you have maybe 3-4 regular commercial varieties, didn't know if avocados would be the same.