Is any rating information available for human/computer hybrid players? So we know that the right computer can beat the best human.   And computer players are rated as well as human players.

Is there any rating information available for hybrid players?  (Humans moving the pieces, augmented by software doing analysis in the background)?

Is there support for the claim that human/computer hybrids are ranked the highest in the world?  (Higher than either humans or computers alone)
Computer-human hybrid chess is known as Advanced Chess or Freestyle Chess. 
There used to be Advanced Chess tournaments in Leon (now it's normal rapid chess, I think), and Chessbase reported on some "anything goes" online Freestyle tournaments, that were generally won by "Centaurs", i.e. computer-human-hybrid players, not by sole engines. 

In recent years there hasn't been much coverage of these kind of events, but apparently Freestyle chess is going strong as ever. Based on PAL/CSS, Infinity Chess and FICGS tournaments there even exists a rating list. (Keep in mind that you cannot compare the absolute values of the ratings on this list with the Fide rating list or the engine ratings.)