@peacefulpete: it is unlikely the early Christians would use the stake given the existing symbolism of the cross. Most early text reference not the cross but either the Chi (X), Taw (+), Chi-Rho (XP overlapped) or reference ‘the sign’. Orthodox Christians still use the + over the elongated cross from Western Christianity.
Note that the Jews (where Christianity originates from) used the sign to mean ‘truth’ or given it was the end of the alphabet, ‘God’. The Jews in turn got it from Egypt and/or Babylon. Likewise Ezekiel, Leviticus and Genesis used the sign for eg. the mark of Cain, the mark of the Passover etc
These signs are thousands of years old and predate Judaism and Christianity and are heavily found in all those texts. As far as the Greek stauros meaning a “upright stake” in this context is only a 18th/19th century invention, and uses a very dubious set of sources, seemingly in an effort to purify Christianity from pagan and Jewish lore, once again, you see this in Millerite theology, which the Russelites and IBSA were borrowing many of these interpretations which eventually split into the faction we now know as JWs.
There is no reference to a stake in early Christian “lore”, all references dating as early as 200AD (Christianity wasn’t widespread until ~100AD) use these symbols to mean Jesus (and/or God, depending on branch):