Try this one...
Rhine-8
Doesn't really follow the normal line of Rhine worlds where Psi powers are discovered "naturally." Instead a powerful Psion World-Jumper showed up in this world in the 1920's.
The Psion contacted people in the governments of the USA, England, and France. He proved he was a Psion and showed them examples of advanced technology. He explained that he was from the future (like many lost world jumpers he may have believed that) and convinced them of the oncoming world war and cold war. He also told them of the bio-warfare that made his future dead. He planed to prevent that horror.
The first step in his plan was to train other psions pulling on talent from the USA, and the British and French Empires. The second was to get a secret Jet program started in America and Australia (where there was room to hide such things). Electronic computer programs were started in all three nations as well.
The Psion, an egalitarian democratic socialist, got less cooperation on the political front, but he got a hearing.
The local year is 1939, teams of American, British, and French Psions are working to stop WWII and eliminate both Hitler and Stalin. The surprise complication is that Germany and Russia seem to be allied with out time entities unknown to the Psionic World Jumper.
The Cabal has tipped Homeline off about this Q4 world. If the the fight between the Psions and whatever is infesting Russia and Germany get out of hand, the secret is gone. Worse, botch things badly enough and
Reich-5 might get potent new intelligence.
Note: The out timers could be many things. Demons from some Myth Parallel Hell, Reich-5 Agents, the
Soulless Gem-Injectors hinted at in IW, are all good threats.