1:
Shauna (Froakie)
Youngster Austin (Zigzagoon)
Lass Anna (Pikachu)
Roller Skater Rinka (Zigzagoon)
Every standard Team Flare Grunt
Backpacker Lane (Linoone)

3 seemingly used for Black Belts/Battle Girls with super powerful custom moves/smart AI (Throh/Hawlucha in Reflection Cave, lots of Frost Cavern trainers, etc.), as well as all Smeargle trainers.

5:
All Santalune Gym Trainers
Viola
Sycamore (Lumiose)
Calem (Shalour)
All Shalour Gym Trainers
Calem (Coumarine)
All Coumarine Gym Trainers
Team Flare Admin (Power Plant) (Houndoom)
Poke Fan Lydie (Plusle)
Calem (Route 14)
Team Flare Admin (Pokeball Factory) (Scraggy/Houndoom)
Calem (Anistar)
Team Flare Admin (Mightyena/Houndoom)
Team Flare Admin (Golbat)
Team Flare Admin (Swalot)
Team Flare Admin (Liepard/Manectric)
Sycamore (Couriway)

7:
Grant
Leader Korrina (Lucario/Lucario)
Ace Trainer Monique (Doduo/Helioptile/Granbull)
Psychic Franz (Chimecho/Golett)
Korrina
Successor Korrina (Lucario-M)
Ramos
Team Flare Aliana (Mightyena)
Ace Trainer Rico (Ampharos)
Clemont
Valerie
Team Flare Mable (Houndoom)
Psychic Paschal (Exeggutor)
Olympia
Lysandre 1
Team Flare Aliana (Mightyena/Druddigon)
Team Flare Mable (Houndoom/Weavile)
Team Flare Xerosic (Crobat/Malamar)
Lysandre 2
Lysandre 3
Shauna 2 (Delcatty/Goodra/Greninja)
Tierno 2 (Talonflame/Roserade/Crawdaunt)
Trevor 2 (Raichu/Florges/Aerodactyl)
Ace Trainer Imelda (Cloyster/Sneasel)
Ace Trainer Viktor (Delibird/Mamoswine)
Ace Trainer Shannon (Cryogonal/Jynx/Piloswine)
Ace Trainer Theo (Beartic/Vanilluxe)
Wulfric
Ace Trainer Robbie (Carbink/Raichu/Kingdra)
Ace Trainer Alanza (Weavile)
Calem (Victory Road)
Veteran Gerard (Banette/Leafeon)
Veteran Timeo (Trevenant/Gigalith)
Veteran Catrina (Glaceon/Snorlax)
Veteran Gilles (Skarmory/Umbreon/Alakazam)
Wikstrom
Malva
Drasna
Siebold
Diantha
AZ
Calem (Kiloude)

129:
Grunt Double (Scraggy/Croagunk)

133:
Single Tierno (Corphish)
Trevor/Tierno (Corphish/Pikachu/Flabebe)
Partner Calem (T&T) (Fletching/Braixen)
Partner Calem (Grunt Double) (Espurr/Absol/Braixen)
Partner Calem (Pokeball Factory) (Meowstic/Absol/Delphox)
Team Flare Admin (Double 1) (Toxicroak)
Team Flare Admin (Double 2) (Manectric)
Team Flare Admin (Double 3) (Houndoom)

135:
Team Flare Celosia/Bryony (Manectric/Liepard)
Partner Calem (Geosenge HQ) (Meowstic/Absol/Jolteon/Delphox)