So... Riddler has posted a complete (?) list of appearing Pokemon from Kanto and Johto绿毛虫家族，美乐美乐图鉴；
Caterpie family, MeleMele Pokedex
烈雀家族，游戏介绍视频中出现；
Spearow family, appears in game introduction.
No.024 - No.026 皮卡丘家族，美乐美乐图鉴；
Pikachu family, Melemele Pokdex
穿山鼠家族，地区形态，属性变为冰+钢；
Sandshrew family, Alolan Form, ice + steel
六尾家族，地区形态，属性变为冰→冰+妖精；
Vulpix family, Alolan form, ice + fairy
超音蝠家族，官网截图、游戏介绍视频中出现；
Zubat family, appears in official pictures, and also game introduction (not sure if this means game trailer)
喵喵家族，在主角家里；
Meowth family, inside your house. (But Riddler doesn't mention Alolan form)
可达鸭家族，官网截图中出现；
Psyduck family, appears in official pictures.
卡蒂狗家族，游戏介绍视频中出现；
Growlithe family, appears in game introduction video.
蚊香蝌蚪家族，游戏介绍视频中出现；
Poliwag family, appears in game introduction video
腕力家族，设定画；
Machop family, in concept art.
呆呆兽家族，游戏海滩边出现；
Slowpoke family, appears in the beach.
鬼斯家族，游戏介绍视频中出现；
Gastly family, appears in game introduction video
霹雳电球家族*，队长马玛内身上饰物；
Electrode family, appears as an accessory on a Trial Captain.
蛋蛋家族，地区形态，进化后属性变为草+龙；
Exeggcute family, Alolan form, grass dragon AFTER evolving.
袋兽家族，游戏介绍视频中出现；
Kangaskhan family, appears in game introduction video
墨海马家族*，水族馆装饰画，喷泉雕像；
Horsea family, appears as decoration in aquarium, and a fountain
海星星家族*，水族馆装饰画；
Staryu family, appears as a painting in aquarium
电击兽家族，游戏介绍视频中出现；
Electabuzz family, appears in game introduction video.
肯泰罗家族，宝可骑行；
Tauros, can be ridden.
鲤鱼王家族*，皇家对战蓝方入口；
Magikarp family, entrance decoration of Battle Royal.
拉普拉斯家族，宝可骑行；
Lapras can be ridden.
No.123 - No.131 伊布家族，游戏介绍视频中出现，根据遇敌画面推测栖息在左数第三个岛屿；
From Number 123 to 131 , Eevee family, appear in game introduction video, predicted that may be living in 3rd island.
多边兽家族*，新调教系统吹风机造型；
Porygon family, new hair dryer in the new Pokemon Amie.
卡比兽家族，游戏介绍视频中出现；
Snorlax family, appears in game intro video.
迷你龙家族，游戏介绍视频中出现。
Dratini family , appears in game intro video
Man, that's enough translation for one day. lol.
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