It occurs to me that clusters of distant objects can be examined, and if our models are correct the bounding ellipsoids should not have a bias in the radial direction. It turns out such effects have been discussed in the main stream.
Does the existing theory have an unaccounted for radial bias of distant objects, and if so how much plasma redshift would be needed to account for it?
Having read through the link, I would "assume" that most plasma redshift models would allow for, and acknowledge the moment of objects, including the rotational patterns of suns and galaxies. I would think that such observations would be acknowledged as typical Doppler shift of moving objects, even in a plasma redshift explanation.