Well, only half of these could be considered as "foreign" from either side of The Big Pond. A peacock NATCO CD 151, with resin repairs, and a CD 589 from 1916 Pre-Revolutionary Russia, with drip points. This is the only Russian insulator with drips that I currently know of.

Now, for some mystery-solving: I remember reading somewhere a couple years ago, that Hemingray made insulators that were destined to be used on a telegraph line that originated in the USA, then travelled up to Alaska, crossed the Bering Straits (presumably undersea cable) and then crossed through Kamchatka, into Siberia and eventually on to Moscow, back in the latter 1800s. Did this project actually occur, and were there "special" Hemingray insulators made for this project?