OS had a different flavor than LZ and PPK, LZ and PPK were pretty close, both great, OS has a similar flavor, but I found more depth to it, like LZ meet coconut classic type flavor maybe closer to VP. All great fruit, I'd pick the one with the best season or shelf life.
Taralay is interesting, mild resin on the inside with parsnip towards the peel.
Zinc is very similar to P-22, I think Zinc may be the best of the Parsnip mangoes, but with a prime example of Coc/Cac ripening, I will withhold the title.
O-2 is Everything you would hope for in a mango however. Thick skin, Strong acidity, Nice Navel orange type citrus flavor. I am still on the fence if the mystery mango my friend is giving me are OE or O-2. The bright acidity is a dynamic contrast in O-2, makes it worth the wait.
Kent. It's a great standby, the best ones are rare, but if you can find them close to ripe, it's still a really great fruit, amazing how much fiber newer selections have compared to this common commercial entity.