Edit: Before you spend time comparing alphabet characters to Linear B, I found someone who has done it already:
The 'ox' sign, aka 'aleph' which corresponds to the 'alpha' letter, well, corresponded to the Cretan hieroglyphs and it was called 'alopyx'. It grew to mean a fox or a fox's head, but back then the symbol was the A upside down.
If anyone knows a pinch of Greek, they'd know that we've always removed some parts of the word just for the sake of ease. So alopyx... alops..alop.. Sounds a lot like alpha or aleph for that matter. Those symbols were used around 2100 BCE and 1700 BCE.
(the source is at
http://richardvallance.academia.edu/ )
Middle Minoan period as some call it.
Conveniently, a lot Greek letters look like the first letter/sound of the symbol that depicts it, but obviously it had to be very important to the people. For example olives, which is ελιά, had a symbol that included the E shape.
We also know that Linear A or B did not come from the Egyptians, but scholars believe that the Phoenician alphabet was an evolution of an Egyptian form.
Another interesting discovery that should have been breakthrough but is conveniently ignored is the Dispilio Tablet.
Strikes any resemblence to anything we know?
I see Ε, L, Δ, V, C, F, Y, I, H, Λ, O, Θ, U, μ, Π, π, A, M, W, T and a few others there.
Found in a small villlage in northern Greece, dated around 5000BCE. It must also be Phoenician.