The phrase "the most common among" is correct and usable in written English.
You can use it when referring to a group of items or people to refer to the item or person most widely seen or found in that group. For example: "The most common breed of dog among celebrity pet owners is the French bulldog."
The family name Kim is the most common among Koreans.
The issue surfaced in the early 1990's, when the drugs -- Prozac and Zoloft the most common among them -- first hit the market, and was soon dismissed.
The subplot involves a bare-knuckle fight club led by Harrelson's irredeemable character, whose surname — De Groat — happens to be one of the most common among the real-life Ramapough Mountain Indians.
This spelling Gwinett is by far the most common among library records of this text, but there exist at least two records that render the title as Ambrose Gwinnett.
The virus causes about 19,000 cancers in women every year, and 8,000 in men, according to the C.D.C. Cervical cancer is the most common among women; among men, throat cancer is most common.
Combined, the hundreds of red dots that represent people who died of exposure to the intense desert heat and cold, by far the most common among the causes of death, look like an unshapely bruise.
Single-winged paixiao appear to have been the most common among the early examples, and the double-wing shape (with the pipes lengthening toward the two ends) predominated later.
It is a response that has always been the most common among non-users".
FM was the most common among chronic migraine and chronic tension-type headache patients.
Telangiectatic FNH is an uncommon entity but the most common among non-classic FNHs.
Myocardial infarction (MI) is one of the most common among cardiovascular diseases.
