I got a list

I'll do it in order of how much effort they put into me.
Ajaxis
Shadow-Jutsu (wasn't really training, just fighting him made me better)
Oblivion (HoF training - I can play HoF but I find it boring, might try it more often I <3 new clusters)
Vel0city
MariQo(wasn't really training, just fighting him made me better)
Neuchy
HardStylePete <333 (wasn't really training, just fighting him made me better 300 ping

)
TROOPER (wasn't really training, just fighting him made me better at fighting in Heavy)
Xecuteur (wasn't really training, just fighting him made me better - in German ping)
SidHartan (wasn't really training, just fighting him made me better - in 100ping)