I want to know so that I can sort out a Pokemon with one of those moves.
There are many moves that target multiple enemies. A list, categorised by the rules in which they effect multiple targets, can be found here. You will find more information on each individual move, as well.
Boomburst, Bulldoze, Discharge, Earthquake, Explosion, Lave Plume, Magnitude, Parabolic Charge, Petal Blizzard, Searing Shot, Self-Destruct, Sludge Wave, Surf, Synchronoise, Teeter Dance.
Targets Adjacent Foes
Acid, Air Cutter, Blizzard, Bubble, Captivate, Dark Void, Dazzling Gleam, Diamond Storm, Electroweb, Eruption, Glaciate, Growl, Heat Wave, Hyper Voice, Icy Wind, Incinerate, Leer, Muddy Water, Origin Pulse, Poison Gas, Powder Snow, Precipice Blades, Razor Leaf, Razor Wind, Relic Song, Rock Slide, Snarl, String Shot, Struggle Bug, Sweet Scent, Swift, Tail Whip, Twister, Water Spout.
Gravity, Hail, Haze, Magic Room, Mud Sport, Perish Song, Rain Dance, Sandstorm, Sunny Day, Trick Room, Water Sport, Wonder Room .
Targets All Foes
Heal Block, Imprison, Spikes, Stealth Rock, Sticky Web, Toxic Spikes.
Targets All Allies
Aromatherapy, Heal Bell, Light Screen, Lucky Chant, Mist, Quick Guard, Reflect, Safeguard, Tailwind, Wide Guard.