Journal bearings you won't find much on EHD, nor on viscosity pressure co-efficient (although a particular BITOGer keeps trying to bring it in).
The typical plain bearing simply is not strong enough to sustain very much pressure, and certainly not enough for the pressure viscosity co-efficient to be a factor (In some cased, the PVC makes the oil a near solid viscosity wise, which is only relevant in rolling elements, otherwise friction would be ridiculous)
Rolling element bearings, are essentially point, or line contact depending on ball or roller/needle.
The surface pressure is therefore the load, divided by the contact area, and a point or line has zero contact area, so the surface pressure is by definition infinite. That's clearly not the case, as no material has an infinite strength.
So the surface (surfaces both of them) in rolling element bearings deform, such that there is now enough surface area to support the load. If the surface pressure is within the elastic range of the metals, the surfaces return to normal as the bearing rolls, and a "wave" of elastic deformation follows the element around the bearing. This reshaping of the surfaces also entrains oil, which helps distribute the pressures at the interface.
(Note, this surface deformation, done cyclically and depending on loads leads to surface fatigue and spalling...load/life are negatively correlated...load it low enough, and life is long, but the components are bulky and absorb energy...load it more, more fatigue, less fatigue life)
EHD in engines lives in places like cams and followers, piston rings, gears and chain/sprocket interfaces.