Maybe not in the Journal of the (c)onfederate (c)ongress, but the letter appears in the Journal of the Confederate Congress. (Letter from Benjamin).
So it appears that Mr. Benjamin admits that, with the sole exception of SaxeCoberg, none of these counsel are accredited by the confederate government, but instead held their offices through the U.S. government. This would indicate that none of those foreign governments recognized the confederacy as a sovereign nation, otherwise they would seek accreditation from the Davis regime, and would be in keeping with the global understanding that the confederate states were nothing more than a rebellious section of the U.S.
On the other hand it seems that SaxeCoberg seems to have thought that Texas was independent, something that I doubt the Davis regime would have agreed with.