OK, my feedback is that it is a very left leaning list of sources. I use a site, https://www.allsides.com, that does media bias ratings and rates sites from -6 (high left bias) to 6 (high right bias), and outside of the ones you have listed specifically listed as "Conservative Media", every site that I could find was negative, other than the FT which was listed as "Center" with no numerical rating. Yes, even the WSJ, although that was WSJ news rather than opinion, opinion was slightly right.
Here's the list I got, I had to make some choices on what to use, "ABC" for example can refer to different things.
The Nation -5.00
Slate -4.50
Democracy Now! -4.00
Mother Jones -4.00
New Republic -4.00
Jacobin -4.00
The Atlantic -4.00
Guardian -3.50
AP -3.10
AFP -3.10
Wired -2.75
Time Magazine -2.30
TruthOut -2.00
Politifact -2.00
ProPublica -2.00
NPR -2.00
CBS News (Online) -1.50
FactCheck.org -1.60
Washington Post -1.63
NBC News Digital -1.80
New York Times -2.20
Al Jazeera -2.30
Bloomberg -2.40
USA Today -2.00
Axios -1.70
ABC News (Online) -1.42
Economist -1.40
CNBC -0.90
Reuters -0.89
BBC -0.80
WSJ -0.20
FT ? Rated as Center with no #
RealClearPolitics 0.16
Reason 0.28
The Dispatch 2.00
Washington Times 2.00
Washington Examiner 2.30
National Review 2.50
Fox News (digital) 3.88
If you're trying to build a left leaning media bubble, you're doing a pretty good job. I would be curious to see results from the opposite, choose a few examples of "Liberal Media", and populate the rest of the list with sources that were rated as leaning right.
And I'm sure some people will disagree with the allsides bias ratings. There's no way to be completely objective on something like that. They seem pretty believable to me, but I'm not watching the same movie y'all are.