If we do split in the way shown by Pokemaster, then here is a good place to start I think:
RU: Accelegor, Aggron, Altaria, Ampharos, Armaldo, Articuno, Banette, Bastiodon, Beartic, Bibarel, Bisharp, Boldore, Bouffalant, Braviary, Cacturne, Camerupt, Cryogonal, Darmanitan (Zen Mode), Dewgong, Dodrio, Drifblim, Druddigon, Electabuzz, Electrode, Emboar, Entei, Ferroseed, Flareon, Floatzel, Gabite, Glaceon, Gligar, Golem, Granbull, Grumpig, Hariyama, Haunter, Hitmonchan, Houndoom, Jynx, Kadabra, Keldeo, Kingler, Klinklang, Lairon, Lampent, Lanturn, Leafeon, Lickilicky, Linoone, Machoke, Magmortar, Manectric, Meganium, Mesprit, Moltres, Mr. Mime, Muk, Musharna, Nosepass, Persian, Piloswine, Pinsir, Poliwrath, Probopass, Rapidash, Relicanth, Samurott, Servine, Seviper, Shedinja, Shuckle, Snover, Steelix, Sudowoodo, Tangela, Tauros, Throh, Torterra, Unfezant, Vespiquen, Victreebel, Virizion, Whiscash, Zangoose, Zebstrika
NU: Arbok, Ariados, Basculin, Beautifly, Beedrill, Beheeyem, Bellossom, Butterfree, Carnivine, Castform, Chatot, Cherrim, Chimecho, Corsola, Delcatty, Delibird, Dunsparce, Dustox, Emolga, Exeggutor, Exploud, Farfetch’d, Fearow, Furret, Garbodor, Girafarig, Golduck, Heatmor, Hypno, Illumise, Jumpluff, Kecleon, Kricketune, Leavanny, Ledian, Liepard, Lopunny, Lumineon, Lunatone, Luvdisc, Luxray, Magcargo, Mantine, Maractus, Masquerain, Mawile, Mightyena, Minun, Mothim, Noctowl, Pachirisu, Parasect, Pelipper, Phione, Pidgeot, Plusle, Primeape, Purugly, Qwilfish, Raichu, Rampardos, Raticate, Sawk, Seaking, Seismitoad, Simipour, Simisage, Simisear, Skuntank, Solrock, Spinda, Stantler, Stunfisk, Sunflora, Swalot, Swanna, Torkoal, Tropius, Unown, Vanilluxe, Vileplume, Wailord, Watchog, Weezing, Wigglytuff, Wormadam (All Forms)
