Zuse
The assertion that the Z3 was Turing-complete is very dubious. Being programmable doesn't make a machine equivalent to Turing's U. "Program code was stored on punched film" according to Wikipedia. Even its successor the Z4 had no memory for the program; all it had was "a mechanical memory with 64 words." [1] That makes it programmable like a Jacquard loom was programmable in 1805, or like ENIAC was programmable in 1945. None of these was Turing-complete, because to emulate U, the machine must have a rewritable memory where its own program is stored. (Somebody editing Wikipedia seems to be very confused about this).
Actually nobody has ever built or will ever build a Turing-complete machine, because it needs an infinitely long rewritable memory tape. But the first approximation to one was only built in 1948, in Manchester, England. I'm typing this, and you're reading it, on a slightly updated version of the 1948 device.
Zuse was indeed a great inventor, but he knew nothing about Turing's work until well after the end of WW II.
[1] See Konrad Zuse's Z4: Architecture, Programming, and Modifications at the ETH Zurich, by Ambros P. Speiser, in The First Computers - History and Architectures, edited by Raúl Rojas and Ulf Hashagen, MIT Press, 2000.