Match 1: Lawful Good vs. True Neutral vs. Chaotic Evil
TN, LG, CE
Match 2: Neutral Good vs. Chaotic Neutral vs. Lawful Evil
LE, CN, NG
Match 3: Chaotic Good vs. Lawful Neutral vs. Neutral Evil
CG, NE, LN

Match 1: Lawful Good and Chaotic Evil are too absolute for anything really fun to come out, in my opinion, so TN wins with LG slightly beating CE just because I'm sick of CE baddies

Match 2: Lawful Evil would be a blast to watch what with the intelligent swarm thing going on. Chaotic Neutral is always a blast so cool, and neutral good seems boring for a monster.

Match 3: Chaotic Good could make for interesting party interactions. Neutral evil makes for a good baddie while lawful neutral is just dull unless you're a cleric of St. Cuthbert with spontaneous cures and destruction domain. (Read as, Dr. Pain)