Early Baltic Corded Ware form a genetic clade with Yamnaya, but...

This is what Mittnik et al. 2018 say about a couple of their Corded Ware, or Baltic Late Neolithic (Baltic_LN), samples from what is now Lithuania:

Computing D-statistics for each individual of the form D(Baltic LN, Yamnaya; X, Mbuti), we find that the two individuals from the early phase of the LN (Plinkaigalis242 and Gyvakarai1, dating to ca. 3200–2600 calBCE) form a clade with Yamnaya (