Gideon vs Zut vs Yanilov

[pudding11591]

All claim to have gotten their black belts from Imi Lichtenfeld, which they probably did. But they also say they were all his right hand man. Respectively, they all run magnificent organizations. What is the deal with who is the highest rank right now? They all say they received their 10th dan or were the highest ranked when Imi Lichtenfeld passed. Is there anyone that is considered the "head" of all Krav Maga now?
Also, did they all split into their organizations from the first Krav Maga organization?
Thanks to everyone who answers.