I'm gonna completely ignore the existence of the "alpha" tiers (just meaning I'm not phrasing this in terms of raises and drops)
Smogon is proceeding with the lower tiers at a more accelerated pace than in previous generations, and that starts this month with our initial OU / UU determination (LC and Doubles tier leaders--if you'd like to kick off UUs, PM me, and I'll include you as well).
This is based exclusively on Pokebank (suspect + regular) usage in December, and as this is the initial cutoff, we're just using 3.41%.
So without further ado, here's the combined Pokebank OU usage from December. Everything above-and-including Tangrowth is OU:
Smogon is proceeding with the lower tiers at a more accelerated pace than in previous generations, and that starts this month with our initial OU / UU determination (LC and Doubles tier leaders--if you'd like to kick off UUs, PM me, and I'll include you as well).
This is based exclusively on Pokebank (suspect + regular) usage in December, and as this is the initial cutoff, we're just using 3.41%.
So without further ado, here's the combined Pokebank OU usage from December. Everything above-and-including Tangrowth is OU:
Code:
Combined usage for OU
+ ---- + ------------------ + ------- +
| Rank | Pokemon | Percent |
+ ---- + ------------------ + ------- +
| 1 | Landorus-Therian | 36.141% |
| 2 | Tapu Lele | 25.332% |
| 3 | Tapu Fini | 19.984% |
| 4 | Genesect | 18.404% |
| 5 | Tapu Koko | 18.145% |
| 6 | Metagross-Mega | 17.621% |
| 7 | Greninja-Ash | 15.285% |
| 8 | Marowak-Alola | 14.762% |
| 9 | Pheromosa | 14.315% |
| 10 | Garchomp | 13.956% |
| 11 | Toxapex | 11.848% |
| 12 | Magearna | 11.783% |
| 13 | Ferrothorn | 11.491% |
| 14 | Heatran | 11.378% |
| 15 | Magnezone | 10.769% |
| 16 | Celesteela | 10.226% |
| 17 | Scizor-Mega | 9.967% |
| 18 | Tapu Bulu | 9.041% |
| 19 | Dugtrio | 8.622% |
| 20 | Latios | 8.432% |
| 21 | Excadrill | 8.291% |
| 22 | Skarmory | 8.211% |
| 23 | Chansey | 7.364% |
| 24 | Kartana | 7.315% |
| 25 | Zygarde | 7.117% |
| 26 | Mimikyu | 7.064% |
| 27 | Rotom-Wash | 6.962% |
| 28 | Charizard-Mega-X | 6.559% |
| 29 | Venusaur-Mega | 6.463% |
| 30 | Buzzwole | 6.343% |
| 31 | Sableye-Mega | 6.313% |
| 32 | Greninja | 5.975% |
| 33 | Hoopa-Unbound | 5.966% |
| 34 | Alakazam-Mega | 5.302% |
| 35 | Pinsir-Mega | 5.281% |
| 36 | Gyarados-Mega | 5.138% |
| 37 | Manaphy | 5.122% |
| 38 | Pelipper | 5.104% |
| 39 | Nihilego | 5.033% |
| 40 | Mantine | 4.233% |
| 41 | Xurkitree | 4.170% |
| 42 | Zapdos | 4.168% |
| 43 | Tyranitar | 4.126% |
| 44 | Mamoswine | 4.020% |
| 45 | Kingdra | 4.002% |
| 46 | Jirachi | 3.827% |
| 47 | Muk-Alola | 3.638% |
| 48 | Clefable | 3.568% |
| 49 | Tangrowth | 3.415% |
+ ---- + ------------------ + ------- +
| 50 | Charizard-Mega-Y | 3.379% |
| 51 | Keldeo | 3.239% |
| 52 | Landorus | 3.209% |
| 53 | Zygarde-10% | 3.182% |
| 54 | Mandibuzz | 2.931% |
| 55 | Dragonite | 2.926% |
| 56 | Amoonguss | 2.789% |
| 57 | Kyurem-Black | 2.736% |
| 58 | Porygon-Z | 2.682% |
| 59 | Tornadus-Therian | 2.645% |
| 60 | Volcarona | 2.496% |
| 61 | Bisharp | 2.422% |
| 62 | Necrozma | 2.293% |
| 63 | Ninetales-Alola | 2.286% |
| 64 | Sharpedo-Mega | 2.251% |
| 65 | Scolipede | 2.038% |
| 66 | Azelf | 1.969% |
| 67 | Gliscor | 1.848% |
| 68 | Hippowdon | 1.820% |
| 69 | Quagsire | 1.784% |
| 70 | Araquanid | 1.770% |
| 71 | Weavile | 1.765% |
| 72 | Salamence | 1.735% |
| 73 | Azumarill | 1.718% |
| 74 | Gengar | 1.698% |
| 75 | Togekiss | 1.578% |
| 76 | Starmie | 1.553% |
| 77 | Hydreigon | 1.537% |
| 78 | Decidueye | 1.527% |
| 79 | Latias | 1.480% |
| 80 | Alomomola | 1.441% |
| 81 | Seismitoad | 1.425% |
| 82 | Gyarados | 1.409% |
| 83 | Shedinja | 1.401% |
| 84 | Dhelmise | 1.351% |
| 85 | Salazzle | 1.347% |
| 86 | Mew | 1.340% |
| 87 | Serperior | 1.296% |
| 88 | Ditto | 1.256% |
| 89 | Scizor | 1.227% |
| 90 | Golisopod | 1.218% |
| 91 | Raichu-Alola | 1.199% |
| 92 | Breloom | 1.173% |
| 93 | Terrakion | 1.167% |
| 94 | Shuckle | 1.143% |
| 95 | Thundurus | 1.113% |
| 96 | Tentacruel | 1.094% |
| 97 | Primarina | 1.073% |
| 98 | Persian-Alola | 1.056% |
| 99 | Smeargle | 1.035% |
| 100 | Espeon | 1.020% |
| 101 | Kommo-o | 0.988% |
| 102 | Minior | 0.984% |
| 103 | Aerodactyl-Mega | 0.945% |
| 104 | Volcanion | 0.927% |
| 105 | Chandelure | 0.870% |
| 106 | Lycanroc | 0.868% |
| 107 | Bronzong | 0.846% |
| 108 | Krookodile | 0.808% |
| 109 | Porygon2 | 0.775% |
| 110 | Pyukumuku | 0.742% |
| 111 | Gastrodon | 0.738% |
| 112 | Nidoking | 0.727% |
| 113 | Thundurus-Therian | 0.706% |
| 114 | Slowbro | 0.694% |
| 115 | Tsareena | 0.694% |
| 116 | Victini | 0.691% |
| 117 | Absol-Mega | 0.687% |
| 118 | Cloyster | 0.672% |
| 119 | Conkeldurr | 0.667% |
| 120 | Suicune | 0.596% |
| 121 | Sandslash-Alola | 0.569% |
| 122 | Uxie | 0.550% |
| 123 | Umbreon | 0.545% |
| 124 | Kabutops | 0.537% |
| 125 | Celebi | 0.534% |
| 126 | Bewear | 0.524% |
| 127 | Arcanine | 0.506% |
| 128 | Torkoal | 0.503% |
| 129 | Infernape | 0.502% |
| 130 | Exeggutor-Alola | 0.501% |
| 131 | Vikavolt | 0.494% |
| 132 | Klefki | 0.491% |
| 133 | Rotom-Heat | 0.491% |
| 134 | Blissey | 0.490% |
| 135 | Cresselia | 0.474% |
| 136 | Talonflame | 0.466% |
| 137 | Goodra | 0.463% |
| 138 | Galvantula | 0.462% |
| 139 | Hawlucha | 0.460% |
| 140 | Staraptor | 0.455% |
| 141 | Raikou | 0.447% |
| 142 | Crawdaunt | 0.442% |
| 143 | Forretress | 0.434% |
| 144 | Reuniclus | 0.429% |
| 145 | Golem-Alola | 0.422% |
| 146 | Whimsicott | 0.413% |
| 147 | Garchomp-Mega | 0.385% |
| 148 | Drampa | 0.377% |
| 149 | Flygon | 0.369% |
| 150 | Venusaur | 0.369% |
| 151 | Komala | 0.362% |
| 152 | Alakazam | 0.355% |
| 153 | Donphan | 0.352% |
| 154 | Diggersby | 0.349% |
| 155 | Sylveon | 0.341% |
| 156 | Audino | 0.327% |
| 157 | Blastoise-Mega | 0.323% |
| 158 | Crobat | 0.311% |
| 159 | Aerodactyl | 0.309% |
| 160 | Milotic | 0.303% |
| 161 | Jellicent | 0.283% |
| 162 | Incineroar | 0.278% |
| 163 | Guzzlord | 0.276% |
| 164 | Crabominable | 0.270% |
| 165 | Mudsdale | 0.269% |
| 166 | Swampert | 0.264% |
| 167 | Carbink | 0.263% |
| 168 | Jolteon | 0.261% |
| 169 | Swellow | 0.256% |
| 170 | Snorlax | 0.250% |
| 171 | Wishiwashi | 0.249% |
| 172 | Froslass | 0.235% |
| 173 | Gigalith | 0.232% |
| 174 | Empoleon | 0.232% |
| 175 | Nidoqueen | 0.225% |
| 176 | Metagross | 0.223% |
| 177 | Silvally | 0.216% |
| 178 | Lanturn | 0.211% |
| 179 | Darmanitan | 0.209% |
| 180 | Comfey | 0.206% |
| 181 | Rhyperior | 0.200% |
| 182 | Entei | 0.194% |
| 183 | Vaporeon | 0.192% |
| 184 | Bruxish | 0.191% |
| 185 | Slowbro-Mega | 0.189% |
| 186 | Roserade | 0.186% |
| 187 | Chesnaught | 0.185% |
| 188 | Palossand | 0.166% |
| 189 | Haxorus | 0.163% |
| 190 | Doublade | 0.163% |
| 191 | Lucario | 0.159% |
| 192 | Meloetta | 0.158% |
| 193 | Politoed | 0.156% |
| 194 | Magneton | 0.155% |
| 195 | Ribombee | 0.154% |
| 196 | Dodrio | 0.153% |
| 197 | Cofagrigus | 0.146% |
| 198 | Omastar | 0.145% |
| 199 | Slowking | 0.134% |
| 200 | Abomasnow | 0.133% |
| 201 | Dragalge | 0.132% |
| 202 | Feraligatr | 0.130% |
| 203 | Shiinotic | 0.130% |
| 204 | Moltres | 0.127% |
| 205 | Honchkrow | 0.127% |
| 206 | Ludicolo | 0.121% |
| 207 | Diancie | 0.119% |
| 208 | Beartic | 0.117% |
| 209 | Machamp | 0.117% |
| 210 | Electivire | 0.113% |
| 211 | Togedemaru | 0.113% |
| 212 | Glalie-Mega | 0.110% |
| 213 | Vivillon | 0.110% |
| 214 | Heliolisk | 0.107% |
| 215 | Turtonator | 0.106% |
| 216 | Sableye | 0.104% |
| 217 | Ninetales | 0.101% |
+ ---- + ------------------ + ------- +