Thats really cool. I was looking for something like that when I found my first link. Though what I really want is a giant matrix of all passports to all passports.
Interestingly from this list Dominica is the best country to dollar investment at $20k / country. Though Turkey and Grenada actually get you 6. They are more per country. Would be interesting to do a full analysis of all the combos.
Though it looks like their sources are different than my link since the numbers don't line up. Total count of the US is 163 vs 186 from other site.
The data is stored on the front end in a bunch of arrays, if you want to play around with it directly.
> Though it looks like their sources are different than my link since the numbers don't line up.
Most probably different definitions of visa-free (it's not all clear-cut) and "Dependent, disputed, or restricted territories" counted in one but not the other.
A lot of passports will underscore access to the US, EU, Canada etc.
There is also a different level of access. For instance, a Canadian passport will also get you a work holiday in Ireland or Australia. Will any of these do something similar?
I was wondering about what access it buys you. This is sort of why it is being purchased.