"It's probably been done but, here's a list of past gen Pokemon unavailable in SM. I want to see what everyone thinks what Pokemon will be in USUM and what ones may get Alolan forms. (Legendaries, Mythicals and Megas are bolded because those just seem very unlikely to receive Alolan forms)."

Bulbasaur-Vensaur Charmander-Charizard Squirtle-Blastoise Weedle-Beedrill Pidgey-Pidgeot Ekans-Arbok Nidoran-Nidoqueen Nidoran-Nidoking Oddish-Vileplume Venonat-Venomoth Ponyta-Rapidash Farfetch'd Doduo-Dodrio Seel-Dewgong Onix Krabby-Kingler Voltorb-Electrode Hitmonlee Hitmonchan Lickitung Koffing-Weezing Tangela Mr. Mime Jynx Omanyte-Omastar Kabuto-Kabutops Articuno Zapdos Moltres Mewtwo MewSentret-Furret Hoothoot-Noctowl Natu-Xatu Mareep-Ampharos Bellosom Hoppip-Jumpluff Aipom Sunkern-Sunflora Yanma Wooper-Quagsire Unknown Wobbffet Pineco-Forrtress Dunsparce Gligar Steelix Quilfish Shuckle Heracross Teddiursa-Ursaring Slugma-Magcargo Remoraid-Octillery Mantine Houndour-Houndoom Kingdra Phanpy-Donphan Stantler Tyrogue-Hitmontop Smoochum Raikou Enti Suicune Larvitar-Tyranitar Lugia Ho-Oh CelebiTreecko-Secptile Torchic-Blazikien Mudkip-Swampert Poochyena-Mightyena Zigzagoon-Linoone Wurmple-Beautifly, Dustox Lotad-Ludicolo Seedot-Shiftry Taillow-Swellow Ralts-Gardevoir Shroomish-Breloom Nincada-Ninjask+Shedinja Whismer-Exploud Skitty-Delcatty Mawile Aron-Aggron Meditite-Medicham Electrike-Manectric Plusle Minun Volbeat Illumise Gulpin-Swalot Numel-Camerupt Spoink-Gumpig Cacnea-Cacturne Swablu-Altaria Zangoose Seviper Lunatone Solrock Corphish-Crawdaunt Baltoy-Claydol Lilieep-Cradily Anorith-Armaldo Kecleon Shuppet-Banette Duskull-Dusclops Tropius Chimeco Wynaut Clampearl-Huntail-Gorebyss Regirock Regice Registeel Latias Latios Kyogre Groudon Rayquaza Jirachi DeoxysTurtwig-Torterra Chimchar-Infernape Piplup-Empoleon Bidoof-Bibarel Kricketot-Kricketune Burmy-Wormadam-Mothim Combee-Vespiquen Pachirisu Buizel-Floatzel Cherubi-Cherrim Ambipom Buneary-Lopunny Glameow-Purugly Chingling Stunky-Skuntank Bronzor-Bronzong Mime Jr. Chatot Spiritomb Hippopotas-Hippowdon Skorupi-Drapion Croagunk-Toxicroak Carnivine Mantyke Snover-Abomasnow Lickilicky Tangrowth Yanmega Gliscor Gallade Dusknoir Rotom Uxie Mesprit Azelf Dialga Palkia Heatran Regigigas Giratina Cresselia Phione Manaphy Darkrai Shaymin ArceusVictini Patrat-Watchog Purrloin-Liepard Pansage-Simisage Pansear-Simisear Panpour-Simipour Munna-Musharna Pidove-Unfezant Blitzel-Zebstrika Woobat-Swoobat Drilbur-Excadrill Audino Tympole-Seismitoad Throh Sawk Basculin Darumaka-Darmanitan Maractus Dweeble-Crustle Scraggy-Scrafty Sigilyph Yanmask Cofagrigus Zorua-Zoroark Minccino-Cinccino Ducklett-Swanna Deerling-Sawsbuck Karrablast-Escavalier Foongus-Amoonguss Frillish-Jellicent Joltik-Galvantula Ferroseed-Ferrothorn Elgyem-Beheeyem Cubchoo-Beartic Cryogonal Shelmet-Accelgor Stunfisk Mienfoo-Mienshao Druddigon Golett-Golurk Pawniard-Bisharp Bouffalant Heatmor Durant Larvesta-Volcarona Cobalion Terrakion Virizion Tornadus Thundurus Reshiram Zekrom Landorus Keldeo Meloetta GensectChespin-Chesnaught Fennekin-Delphox Froakie-Greninja Bunnelby-Diggersby Scatterbug-Vivillon Litleo-Pyroar Flabébé-Florges Skiddo-Gogoat Furfrou Espurr-Meowstic Spritzee-Aromatisse Swirlix-Slurpuff Inkay-Malamar Binacle-Barbaracle Skrelp-Dragalge Clauncher-Clawitzer Helipotile-Heliolisk Tyrunt-Tyrantrum Amaura-Aurous Hawlucha Dedenne Pumpkaboo-Gourgeist Bergmite-Avalugg Noibat-Noivern Xerneas Yveltal Diancie Hoopa VolcanionEdit: Stepped down from comma game. Couple other fixes. via /r/pokemon http://ift.tt/2wGsmFg