Well, F is shown in the A3 table as non-earning. J is non-earning because I believe the most expensive flex class is C.
A3 is very popular with Polish flyers, A3 fly to WAW and also KRK so its easy for the segments and even the cheapest LO fares in U and O class earn 25%. This seems generous considering the cheapest LH group fares, L & K earn absolutely nothing. I would hope that given the generosity of LO to credit those buckets F might one day be also earning.
Obviously the reason why LH P is non-earning in A3 is the same reason why TK credits so crap to M&M.