How to import geographies when the country’s Import Geography Data is greyed out?

Summary:

We would like to import geography hierarchy for countries not supported by Loqate at this time. Our goal is to seek out a data provider that can offer this service or find an alternative solution to this problem.

Content (required):

As I understand it, Oracle advises to use Oracle-licensed data from Loqate to load in geographies using the Import Geography Data option. The limitation we have found with this is that Loqate does not support most of the countries where our company conducts business in, and is limited to the countries in the list:

List of Available Countries with Loqate Geography Reference Data