So, you can't dispute that fact that Tesla did not invent polyphase AC power..

Let's look at the next one:
Tesla invented the transformer: FALSE.

The Ganz company in Budapest was the first to create and use transformers in AC systems in the late 1870s. Tesla was still in school then and hadn't even began his first job in the field of telephony. His first job was in Budapest in 1880, this is where he possibly observed/stole ideas, and was convinced by the Hungarians that AC was viable and worth pursuing while the West was still 5 years behind.

William Stanley invented the first modern transformer in 1885. His design was based on the Gaulard and Gibbs design. Gaulard had used his transformer in the 1884 Lanzo to Turin AC power demonstration. Also credit goes to the Z.B.D Transformer in Hungary The Z.B.D. Transformer proved to be extremely inefficient and problematic so Stanley designed his own. This is backed up by information at the Smithsonian and IEEE. The Edison Tech Center has published a lot of material on William Stanley sourcing from the Great Barrington Historical Society, the Berkshire Museum and historian Tom Blalock. It was in 1885 that Tesla actually joined the minority of inventors working with AC in trying to pitch his system. There is no proof that Tesla had any mature AC systems designed and ready before then. (Tesla claims to have envisioned his own full AC system in 1882 but there are no written documents of any kind to prove this)