It’s 99.99% sure that it’s Ciamarella, who was on the NCS under McMaster. It was a full espionage job by Schiff’s intel committee plus never-Trumpers and Obama holdovers.
This video explains it all in detail.
WhistleBlower: Ciaramella? - IPOT Presents - 10.23.19
https://www.youtube.com/watch?v=-VKzO7CnaEk
“ Ciamarella, who was on the NCS under McMaster”
Figures. McMaster was a Rat mole l have no doubt.