You can spell Johnny in the following ways:
Johnny
Jonny
Jonnie
Jonniegh (but that sounds kind of girly)
Jony
Johny
Johnnie
Johnniegh (this also sounds girly)
Johny
Does this help?
Johnny
Jonny
Jonnie
Jonniegh (but that sounds kind of girly)
Jony
Johny
Johnnie
Johnniegh (this also sounds girly)
Johny
Does this help?