Lumping together is poor taxonomy, the challenge is how to represent all the branching, eg: the early Krautrock influenced and later "Krautrock produced" Hunters & Collecters work.
Albums 2 & 3 were co-produced by Konrad Plank in Neunkirchen and Weilerswist, Germany following his liking of the first album and tracks such as Talking to a Stranger, Run Run Run, leading to his work on tracks such as Judas Sheep, Tow Truck, and Betty's Worry or The Slab.
Not the Krautrock known to many via Kraftwerk but certainly tangentially adjacent in some odd way.