Yakuza Kiwami 2

There are 49 different kinds of vending machine drinks in this game and what kind of drinks you'll find depends on the vending machine. There are seven different types of vending machines in the game, some rarer than others:

BOSS - Very obvious by its bright blue color. BOSS coffee is a common vending machine in this game since it's a popular brand in Japan. It's worth noting that the "Suntory Natural Water" is different depending on the region.
Lucky Soda (Red) - The Red Lucky Soda is a common machine to find.
Lucky Soda (Orange) - More uncommon to find. Nakamichi Alley in Kamurocho has a bunch of these, and there are only a couple in Sotenbori, such as in the alley across from Four Shine.
Lucky Soda (Yellow) - A pretty rare variant. You can find some on the north side of the Sotenbori Footpath, and also in the northwest part of Kamurocho.
Lucky Soda (Green) - Uncommon variant of Lucky Soda. Kamurocho has several of these in the northeast near Kamuro Hills, and Sotenbori has a few in the southwest corner.
Lucky Soda (Purple) - Slightly rare. This one is obvious because it's almost entirely Mystery Drinks. You can find these in the southwest part of Theater Square in Kamurocho, or near the Bunzaemon Outdoor Mall in Sotenbori.
Lucky Soda (Magenta) - Another rare variant, and almost indistinguishable from Purple except it has different drinks on the top row. You can find it at the northeast or northwest corners of Sotenbori, or the southeast part of Kamurocho.

So let's just get all 13 mystery drinks out of the way first. These can be found in the purple or magenta Lucky Soda machine usually in the middle row. Basically just buy the max amount which is 10 and just drink all 10 (some drinks will take away most of your health or will give you health). I had to do this 3-5 times on Xbox and on the Win. 10 version to get all 13. Now I will have a list of Machines and what they hold. Note: some drinks that are listed will also be listed on multiple machines like Rich Tea or Forest Meltwater.

Boss:
BOSS Rainbow Mountain
Suntory Mineral Water (Okudaise) (can only be found in Sotenbori BOSS machines)
Suntory Mineral Water (M. Alps) (Can only be found in BOSS machines in Kamurocho)
Suntory Black Oolong Tea
Iyemon Tokucha Green Tea
GREEN DAKARA
C.C. Lemon
BOSS Black
BOSS Light Sugar

Lucky Soda (Magenta):
Fruit Dew (Chu-Hi)
Pink Lemonade (Chu-Hi)
Kiwami Drink
Aomidorijiru

Lucky Soda (Green):
Vitamin C Energy Drink
Genmai-cha (500 ml)
Grape Soda
Grape Soda (500 ml)
Rich Tea (500 ml)
Muscle Soda
Poseidon Power
Lemon Squash
Forest Meltwater

Lucky Soda (Red):
Hoji-cha (500 ml)
White Soda
Rich Tea (500 ml)
Mandarin Orange 100%
Poseidon Power
Citrus Cyder
Sukusuku Au Lait
Forest Meltwater

Lucky Soda (Orange):
Hoji-cha (500 ml)
Cafe Mocha
Rich Tea (500 ml)
Clear Marine
Poseidon Power
Forest Meltwater

Lucky Soda (Yellow):
Hoji-cha (500 ml)
Rich Tea (500 ml)
Tropical Ultra Melon
Poseidon Power
Lucky Soda
Forest Meltwater

Can be found in all Lucky Soda machines:
Genmai-cha (280 ml)
Hoji-cha (280 ml)
Rich Tea (280 ml)
Tea
Sengoku Coffee