What is the origin of WHG?

[Donhueas]

No, West Eurasian and East Eurasian form a clade to the exclusion of Basal Eurasian, meaning that both are close to each other than either of them are to Basal Eurasian. Basal Eurasian is some sort of dead end which probably remained somewhere around Arabia after the out of Africa migrations and didn't mix with Neanderthals like other Eurasians, but it still hasn't been found so it is a hypothetical/"ghost" component (like ANE once was before the Mal'ta boy was found).

Great information. EEF are 60% WHG?

[Token]

Great information. EEF are 60% WHG?

Not exactly WHG, but a closely related West Eurasian population which is closer to WHG than to anything else.

[Donhueas]

They don't descend from one another they descend from an earlier common lineage before they split. It's something leading to Kostenki but even older than Kostenki. Before that Ust Ishim and Zlaty Kun who were not yet more related to present day Europeans or East Asians, with many dead ends in between.

Can WHG be rebuilt using ANE? What else should be used, and how much?

[Donhueas]

Not exactly WHG, but a closely related West Eurasian population which is closer to WHG than to anything else.

How is the name?

[Petalpusher]

Can WHG be rebuilt using ANE? What else should be used, and how much?

I don't know what you mean exactly by "rebuilt" but if anything using admixture today, the reverse would be easier as ANE is some sort of intermediate between WHG and something more Eastern in Eurasia. Mostly because it's older in time and closer to the West/East split, in the same way as Kostenki was, but it's not exactly like you could mix a WHG and a Siberian to get it exactly either. Those groups went into isolation and developped their own features and evolutionnary drifts.