Hadn't considered John Nash.

Current favourite is Len Sassaman, suicide in 2011 shortly after bowing out from Bitcoin.

But with a twist in that Hal Finney may have had delegated control of the forum identity, and made one last post as 'Satoshi' in 2014.

In the sense that we perpetuate the vision by promoting the white paper, running a node, building the ecosystem, using sats, and pressing for a replacement to bail outs and banks... we can say "we are all Satoshi". More accurately, the cypherpunks who contributed building blocks that were fused into the white paper and refined the code since, are in a corporate sense Satoshi.

Len Sassaman (with Hal Finney as copilot) is most likely the Satoshi identity behind the paper and code release.

Block 138725 (30 July 2011) contains a transaction which used the PUSH_BYTES operator to insert a message at the cost of 1 BTC. The message is a combination of ASCII art and text. Behold the face of Satoshi.