Am I forgetting any?
Also, what's your favorite of these?
Ice Wall (MM&B) - floats
Wave Burner (MM&B) - no fire, but shoots a heat wave that damages enemies and moves spikes around
Oil Slider (Powered Up) - glob floats, you may jump on the oil to slide across water surfaces
Fire Storm (Powered Up) - doesn't work at all, Fire Man loses the ability to shoot
Fire Wave (X1/MHX) - doesn't work at all
Speed Burner (X2) - no fire effect, you can see the naked torpedoes
Bubble Splash (X2) - bubbles travel higher, X jumps higher when charged
Frost Shield (X3) - bigger shot, charged creates a block/platform that floats