>>17794729 (OP)It all depends on what samples are used for average height. "Corded Ware" isn't an ethnicity. They're much too heterogenous. Only the very early Corded Ware samples are very similar. The rest of the Corded Ware is across the board with EEF and HG ancestry. Since Yamnaya was on average taller than EEF we can attribute the shorter height of Corded Ware generally to increasing EEF ancestry.
The pure steppe ancestors of many Europeans aren't even the core Yamnaya group. It's more like the IE expansion involved a lot of people with a bit more Ukraine_N. It could also be a common founder effect.
Does anyone have height statistics on Ukraine_N by the way?