I suspect not even deceased.
Libertarianism is NOT any sort of popular political preference anywhere.
But if Johnson had just googled a bit, he could have found a couple of Estonians and a Mongolian who he could have mentioned, and he would not have appeared to be such a total dolt.
There is this fellow:
https://en.wikipedia.org/wiki/Tsakhiagiin_Elbegdorjand this one:https://en.wikipedia.org/wiki/Toomas_Hendrik_Ilves
who has been married thrice and wears bowties, because his father always did.
and perhaps this one:https://en.wikipedia.org/wiki/Taavi_R%C3%B5ivas
who is shacked up with a pop singer. Singing is really big in Estonia.
Estonians who describe themselves as believers in a god are 16% of the population.
Estonia has a balanced budget.
The hard part for Johnson would be pronouncing Tsakhoagiin Elbegdorj, Toomas Hendrik Ilves and Taavi Roivas. Thdere is an umlaut (two dots) over the o in Roivas.
There are many who confuse Mongolia with Manchuria, so perhaps he was worried about "Mongolian Candidate" getting confused with "Manchurian candidate".
Perhaps Johnson might try wearing a bowtie. But again, Elijah Mohammad and Malcolm X were fond of those.