As well as the Ju88 & Ju188 and He59. Also He114 & & few others were tested with them, including the Me410, Fw190, Do217, & He177 but non of those types used them operationally.
I am sure I missed a few types that were also tested with torpedo's.
They had the ones they did not export to one of the Baltic States (I forget which one) after the USSR took it over. About a year later they sold or gave them to Finland. I don't know if they actually used them in the time between or not. But I understand you point.
Latvia. The first serial Do.22 was delivered to Yugoslavia (12 airplanes were ordered), the same number was ordered by the Greeks. The Finns received 4 Do.22s, most likely from a Latvian order.