Royal Crown Cola is a brand of cola invented by pharmacist Claud
A. Hatcher of Columbus, Georgia in 1905 and was originally created
for Cole-Hampton-Hatcher Grocery Store as an early generic brand,
to avoid the high cost of purchasing Coca-Cola syrup.

RC Cola is owned and distributed in the U.S. by Keurig Dr Pepper.
In the rest of the world, it is distributed by RC Cola International.

Claud Adkins Hatcher
(August 20, 1876 – December 31, 1933)

^]Diet Rite is a brand of no-calorie soft drinks that was originally distributed by the RC Cola company..

Diet Rite was introduced in 1958 and initially released as a dietetic product, but was introduced nationwide and marketed to the
general public as a healthful beverage in 1962.

7up, circa 1950s

    
   
Kool-Aid is a brand of flavored drink mix owned by Kraft
Foods. The powder form was created by Edwin Perkins in
1927 based upon a liquid concentrate called Fruit Smack.     
    
     
      
     
  Edwin Elijah Perkins        
  (January 8, 1889 – July 3, 1961)

The building in Hastings, Nebraska, where Kool-Aid was invented.

Todays Kool-Aid look.