Were Alpines the Indo-European invaders

[Imperator Biff]

Heh, I don't know man, Celts are obviously similar to Atlantids and Nordids.

North Atlantid is also a mix of keltic nordid and atlantid I think.

[Fortnite777]

I think not. PIE had very robust skulls, none of the reconstructions I see of them look alpinid in the slightest. They mostly look cromagnid, nordic, or atlantid to me.