Goldmont Plus in Gemini Lake platform is 14, not 14+.
Also Nosta, while your latest post is the most convincing yet, linux patch notes say Whiskey Lake is a Coffeelake-U at 15W with CNL(300 series chipset). The rumors that Cannonlake had McIVR makes WHL having one plausible, but there needs to be evidence.
Intel is super confusing in regards to what is actually happening. Since, most of their big guns left in 2016-2017 when they didn't get Cannonlake or Icelake out on time.
Gemini Lake is on 14nm+ transistors, but it is re-using a lot of the 14nm IP. (No additional CPP or Vts or logic cells)
Gemini Lake Plus and Mercury Lake on 14nm++, will not be re-using any of the IP from previous generation. Bottom[FEOL]-up[to BEOL] remake with new CPP, Vts, and track height(9t4f, 7.5t3f, 6t2f, etc) and revised metal stack.
Coffee Lake is on 14nm++ transistors, but it follows mostly the same with Gemini Lake.
Whiskey Lake is also on 14nm++ transistors, but it utilizes the new CPP, Vts, track height, and metal stack.
(Also, there is two Analog VTs, the old one and the new one. The new one is a lot better, but the older one has been improved with lower leakage.)
2019 Icelake-Y is not the 2016 Icelake-Y that was meant to replace the 2015 Cannonlake-Y. So, 2018 Cannonlake-Y is based on 10nm which has similarities with Gemini and Coffee. While, 2019 Icelake-Y is on 10nm+, but is getting forwarded 10nm++ CPP, Vts, track height, hyper-scaling, revised metal stack, etc. Making it more similar to GML+/MCL and WHL.
If the codenames wrong are don't blame me, I had enough of Intel's quirky roadmap.
Parts on 14nm++ with the full suite includes all known and unknown Meltdown and Spectre fixes.