Which of the names shown did Shakespeare not use to spell/sign his own surname?

Sources from William Shakespeare’s lifetime (bapt. 26 April 1564 – 23 April 1616) spell his last name in more than 80 different ways, ranging from “Shappere” to “Shaxberd.” In the handful of signatures that have survived, the Bard never spelled his own name “William Shakespeare,” using variations or abbreviations such as “Willm Shakp,” “Willm Shakspere” and “William Shakspeare” instead.

The standard spelling of the surname as "Shakespeare" was the most common published form in Shakespeare's lifetime, but it was not one used in his own handwritten signatures, of which only six survive. These are all attached to legal documents. It was, however, the spelling used as a printed signature to the dedications of the first editions of his poems “Venus and Adonis” in 1593 and “The Rape of Lucrece” in 1594. It is also the spelling used in the “First Folio”, the definitive collection of his plays published in 1623, after his death.

The four documents upon which his surviving signatures appear are on a court deposition, a house purchase deed, a mortgage agreement and on his Last Will and Testament which contains three signatures. The signatures appear as: “Willm Shakp”, “William Shaksper”, “Wm Shakspe”, “William Shakspere”, “Willm Shakspere”, and “William Shakspeare”. Use of abbreviated versions of a name was a convention of the time. It was only following the publication of the Cambridge and Globe editions of Shakespeare in the 1860s, "Shakespeare" began to gain ascendancy.