Lunatic 2 "The Boiler Room" - 7 of each (R). My 6-builder solution doesn't help here - it uses 7 bombers and 8 climbers, and barely makes it even with that
Lunatic 3 "Anxiety" - 4 per SYCLW
Lunatic 4 "No Added Colors Or Lemmings" - 2, as every skill is required
Lunatic 5 "There's Madness In The Method" - 2, as per SYCLW
Lunatic 6 "Which One Are You Trying To Get?" - 2 of each (R)
Lunatic 7 "Down, Along, Up. In That Order" - 5, as per SYCLW (+ a bit of common sense)
Lunatic 8 "Lemming About Town" - 4, as per SYCLW
Lunatic 9 "Evacuating A Coal Mine" - 3 of each. The 2-basher solution requires 3 builders, while the 2-builder solution requires (at least) 5 bashers.
Lunatic 10 "Be More Than Just A Number" - 9, as per SYCLW
Lunatic 11 "Fix The Road, Quick" - 8, per SYCLW
Lunatic 12 "Water Processing Plant" - 7, per SYCLW
Lunatic 13 "This Corrosion" - 7, per SYCLW
Lunatic 14 "Move On In Two Seperate Groups" - 5, per SYCLW
Lunatic 15 "Evil Whisper" - 2, per SYCLW
Lunatic 16 "SEGA Four" - 5 of each (this is just the no-climber solution, which very obviously needs all 5 builders; any solution using fewer builders would need at least 18 climbers).