The regular Mzuri drill from LS25 with an additional subsoiling feature and the capacity to singulate grain (which is also feasible with the 6m version in real life).
I have a Mzuri drill from the base game that can loosen the soil deeply and can also be used to singulate grain, among other things.
Although I am aware that the seed drill unit does not truly permit grain singulation in its present design and row spacing, its sister model does.
This is part of the enjoyment of a good direct drill, and I am aware of it.

Mohnfritze04 is credited.