I believe there are two countries related to "Virgin Islands" - US (ISO 850) and British (ISO 92).
In some lists I see them listed as
Virgin Islands, British and
Virgin Islands, US (this is the way ISO lists them)
...and some lists have them listed as
British Virgin Islands and
US Virgin Islands
I presume having them done as in the first example has the benefit of grouping them together for ease of finding them in a list.
What is the most common way someone would expect to see them ordered in a list of countries? I am interested in the most known/understood convention and not necessary the "proper" one.