LY Insider: Not sure what are the IATA published fares, but it was a cheap Y and i double checked with ELAL its upgradable (as it was cheaper than S), And i was also upgraded... So it was Y for everything for my opinion.

LiorM: You are right, I have just checked our agreement, Discounts are
S, Y, D & I, Recently we got an ok for discount on Q class.
For F you can get discount if you ask, But this is not on regular bases....