There is also the first production hydrofoil brand Zeeko, in newer days with performance foils that is.
Takoon also has a good foil, which is made by Ketos.
And Horue, one of the pioneers in hydrofoiling
But arent they all in this thread ?http://www.kiteforum.com/viewtopic.php?f=196&t=2384037
Where there are JC and Groove and Radical and many more I believe, if you walk through this thread
But a simple list without pictures is a good idea, so maybe just append the missing ones you can find in the picture thread.