Have you read “A Mosque In Munich” yet? It makes mention of a group in Russia known as the Promethean League. The name, at least to me, implies an Illuminist connection. That connection, of course, may only be through continuity of ideology. The League was against the Tzar, then against the Soviet Union.

It used non-Russian nationalities and ethnic minorities against the Soviet Union. It became involved with the Nazis.

From “A Mosque in Munich,” pg. 45:

“Von Mende recruited a group of men who had been in exile for years. Most were part of an anti-Soviet move­ment called Prometheus–named for the mytho­log­i­cal hero who cham­pi­oned human­ity by defy­ing the god Zeus. It was founded in 1925 by men who had hoped the destruc­tion of the czarist empire would free their peo­ples from Russ­ian rule. When that didn’t hap­pen, the Prometheans pub­lished and agi­tated against Moscow from War­saw and then Paris. By the 1930’s, the group was being backed by French, Pol­ish, British, and Ger­man intel­li­gence. The Ger­man con­quest of France brought the group com­pletely under Ger­man control.”

The cited portion is referring to Gerhard von Mende. He was a Nazi in the Baltic who recruited muslims in the Soviet Union to the Nazi cause.

If there was some connection between the Illuminati and the Prometheus movement, that might serve as a bridge between the old 18th century Illuminists and the Muslim Brotherhood.

The connection, again, does not have to be organizational. Weishaupt’s ideas may have been transmitted through several different ideological veins and tributaries to the Prometheus movement.

At any rate, Johnson’s book is well worth the read.