There are a lot of MF 6x6 camera makes that were not listed.

Major omissions (IMO) include the Zeiss 6x6 folders, the Zeiss TLRs, the Minolta TLRs, the Mamiya TLRs, the Olympus TLRs and the Meopta Flexaret TLRs - to name a few. Then there are the Ukrainian 6x6 SLRs and the Russian 6x6 folders. Also omitted were the East German Pentacon 6 series of 6x6 SLRs.