Well all I know about that is that the Philadelphia Bulletin beloved of my youth went under, and the leftist Philadelphia Inquirer survives (tho it seems to be sputtering).
MOST of 'em seem to be sputtering these days, thank God! I also recall Houston's moderately conservative morning paper, the Houston Post, being "merged" into the liberal firebreathing Houston Chronicle. I didn't track much of the goings on back then, but I'd lay odds that many of the "assimilated" Post employees were soon job hunting.
I'm at a loss to understand the all but complete takeover by leftists of newspaper, periodical, then broadcast(TV) media. I'm hoping LS in his research is able to shed some light on a perplexing situation.
FGS