This is a corded pot of the single grave culture. Looks like a bell beaker. These people were the ancestors of the Bell Beaker folk, yet for some reason archaeologists don't recognize this pottery as the origin of bell beakers.

Instead they have a convoluted narrative of how the pots passed from Morocco to Lisbon and were adopted by the Bell beaker invaders of Iberia and somehow magically adopted by all other Beaker folk from Scotland to Germany!