Thanks for that!
This past summer, I ended up with a Z20 fruit somehow. My different mango sources all denied passing it along to me or even knowing what it was. Hrmmmm...
Anyway, I really liked it, and found it different than any mango I recall. Floral and sweet, some complexity and mild subacidity, and low or no fiber. Did not strike me as being the same as OS, LZ, PPK, or any other mango I've tried. Similar in some ways, but definitely different.
Kept the seed, and now have a Z20 x ? seedling. Curious to see what this becomes.